Tag: ios

On device, there is an unwanted border line on the SCIChartSurface. Please refer to the screenshot.

I tried removing this by setting the border width and setting it’s colour as white as below
self.surface.view.layer.borderColor = [[UIColor whiteColor]CGColor];
self.surface.view.layer.borderWidth = 2.0f;
However, this does not set the border of the SCIChartSurface.

How do I remove this unwanted border line?

Hey Guys,

I have a requirement where I need to show Donut Chart Title , but adding any annotation is crashing my application.

    let textAnnotation = SCITextAnnotation()
    textAnnotation.coordinateMode = .relative
    textAnnotation.x1 = SCIGeneric(0.5)
    textAnnotation.y1 = SCIGeneric(0.5)
    textAnnotation.horizontalAnchorPoint = .center
    textAnnotation.verticalAnchorPoint = .center
    textAnnotation.text = "Test"
    textAnnotation.style.textStyle.fontSize = 14
    textAnnotation.style.textColor = UIColor.fromARGBColorCode(0xff000000);
    textAnnotation.style.backgroundColor = UIColor.clear
    chartSurface.annotations = SCIAnnotationCollection(childAnnotations: [textAnnotation])

Thanks

Hi guys,

I have some troubles with piecharts in swift. I want to provide custom labels outside of the piecharts segments. I found a screenshot of a nested piechart attached to an issue in your issue tracker. Thats what I want to do in swift, but I couldn’t find out a way to do so. Could you please provide an example code?

Thanks a lot in advance!
Alex

Hi

I am developing a Xamarin iOS application and I’m using a SCIPieChartSurface. I can create the chart and set its values, but is is not possible to auto-update the donut with new data.
I am trying to update the value by doing:

myDonut.MyPieSegment.Value = newValue;

But nothing happends…

I heard it was a bug in the API for Android a month ago, is this similar? Or am I doing something wrong?
Thanks in advance!

Best regards
Jonas

Hi, guys

I have some data series like:

[[SCIXyDataSeries alloc] initWithXType:SCIDataType_DateTime
                                 YType:SCIDataType_Double
                             SeriesType:SCITypeOfDataSeries_XCategory];

Also my Y axis is kind of class SCINumericAxis

So my question is

if i’m trying add value to the series

[volumeSerie appendX:SCIGeneric(bar.time) Y:SCIGeneric([bar.volume doubleValue])];

and my bar.volume is bigger than 2 147 483 648 (float limit as i’m know). It’s leads to a axis range crash. Like on the attached image.

So what should i use to handle huge values?
Like a billions and more

Best regards,
Sushynski Andrei

If we set ClipMode.None we can pan infinitely to the uncharted space of left and right. this is fine.
But I want to do panning infinitely only to the left side. So I set ‘clipAtMax’. This is stop panning at right. But instead of panning infinity to the left, it is stretching the left part.
Any solution ?

Guys can you tell me please why I get this error after build on new `mac M1 chip and how to solve it:

error: unable to load standard library for target ‘arm64-apple-ios8.0’
/Users/nameuser/Projects/pojectname/ios/SciChart.framework/Modules/SciChart.swiftmodule/arm64.swiftinterface:1:1: error: failed to build module ‘SciChart’ from its module interface; the compiler that produced it, ‘Apple Swift version 5.1.3 (swiftlang-1100.0.282.1 clang-1100.0.33.15)’, may have used features that aren’t supported by this compiler, ‘Apple Swift version 5.3.2 (swiftlang-1200.0.45 clang-1200.0.32.28)’
// swift-interface-format-version: 1.0`

Hi,

I’ve encountered an issue with the candlestick graph I’ve drawn that consists of a set of random X date time values – this causes the candlesticks have varying distances from one another.

Rendering the data from an initial set seems to be fine but as I run a NSTimer to add on more points, the body of the new candlesticks seem to be 0. (Note, the date time values are still random but have been made to be set after the last placed point)

In fact, the initial data points that I added see to be rendered ‘body-less’ if it’s within the same visible range as the newly added points. And if I pan along the newly added points, the bodies of some data points will appear at random visible ranges.

Is this a normal behaviour or should I take anything else into consideration?

Here are a couple of my configurations which I think may have affected anything:
1. My XAxis has set its visible range limit mode to ClipMode_Min
2. Candlestick series style data body width is set to be default.
3. I have a the following modifiers set up.

self.xDragModifier = [SCIXAxisDragModifier new];
self.xDragModifier.axisId = @"xAxis";
self.xDragModifier.dragMode = SCIAxisDragMode_Pan;
self.xDragModifier.clipModeX = SCIZoomPanClipMode_ClipAtMin;
[self.xDragModifier setModifierName:@"XAxis DragModifier"];

self.pinchZoomModifier = [[SCIPinchZoomModifier alloc] init];
[self.pinchZoomModifier setModifierName:@"PinchZoom Modifier"];
self.pinchZoomModifier.xyDirection = SCIXYDirection_XDirection;

self.zoomPanModifier = [SCIZoomPanModifier new];
self.zoomPanModifier.clipModeX = SCIZoomPanClipMode_ClipAtMin;
self.zoomPanModifier.xyDirection = SCIXYDirection_XDirection;
[self.zoomPanModifier setModifierName:@"ZoomPan Modifier"];

SCIModifierGroup * gm = [[SCIModifierGroup alloc] initWithChildModifiers:@[self.xDragModifier, self.pinchZoomModifier, self.zoomPanModifier]];
self.chartSurface.chartModifier = gm;

The points are drawing just fine, but the body of the candlestick is not appearing as expected.

Thanks in advance.

I’m trying to make a chart with a “toggle function”.

The “toggle function” what i wanted to make is this.

1. enter to UIViewController which Chart is in it
2. before singleTap on a chart, a chart has zoomPanModifier, XAxisDragModifier,, etc
3. after make singleTap on the chart, that chart has only CursorModifier.
4. CursorModifier’s UI stays on chart without disappearing and i can move crossed line to specific point i want (just like what CursorModifier originally does)
5. another single tap on chart would make a chart to have all other modifiers but CursorModifer.

–

What I have made successfully was 1,2,3,5 . not 4.

The way i was going to solve this problem was make fake touch event on Chart view and
snatch UIGestureRecognizer Event and let ChartView think they’re being touched till I give stop signal

But I heard that there is no more way to pass fake touch to UIView.

So I’m feeling difficulty on this problem…..

is there any easy way to solve this problem?

–

TL;DR;

I WANT TO MAKE CURSORMODIFIER’ UI STAYS ON A CHART!

+)
(lldb) po SciChartVersionNumber
0x3ff0000000000000

(lldb) po SciChartVersionString
0x474f525029232840

I wanted to know what version I’m using.. but i couldn’t know… what version am i using..?

Hi, guys

Is it possible to draw axis line at axis area? See attachment.

When search this forum, I found that we can achieve it by adding point marker. But I am getting this error when trying to add point marker :
‘Operation: setPointMarker: is not avaliable on type: SCIHorizontallyStackedColumnsCollection’

let me know this feature(round top corners of bars) is availble or not ! Or is there any way to do this ?

Hi, guys

My x axis is SCICategoryDateTimeAxis and i’m want to draw grid line with custom period. Let’s say every four hours for data with a period of thirty minutes. What is the best way for that?

Can i redifined axis’s tickCoordinatesProvider?
Can you provide some example?
Or it only possible with axes annotations ?

Best regards,
Sushynski Andrei

Good day! I have download this zip archive SciChart_iOS_SDK_4.2.0.5533.zip, on my laptop. Opened it and can not find the file SciChart.xcframework, according description from this article. I need to add library to Xcode frameworks, but I can not do it. Please can you tell me where can I get this file.

Hi

I am developing a Xamarin iOS application and I’m using a SCIPieChartSurface. I can create the chart and set its values, but it is not possible to auto-update the donut with new data.
I am trying to update the value by doing:

myDonut.MyPieSegment.Value = newValue;

But nothing happends…

I would like to add scrollBar to SCINumericAxis for example xAxis.

I did find documentation:
https://www.scichart.com/documentation/v5.x/webframe.html#Scrollbars.html

But on iOS version, I can’t find numericAxis.Scrollbar is missing

Good day!
I need to determine the value of the visible graph y from the x value and the problem is that I can’t calculate the y value outside of the data I’m rendering
example data:
[
{ x:1, y: 10 },
{ x:5, y: -5 },
{ x: 9, y: 15}
]

I use SCISplineMountainRenderableSeries and I need to show the intersection of the graph at point 3.5
I need a point but I have only one coordinate value

how can i get this y value?

Hi, guys

My X axis is SCICategoryDateTimeAxis type.

And i have a huge amount of data to display. So i need to display it by scrolling of the chart surface.
So what is the best practice to update data series on the fly and display it at the chart surface?

Best regards,
Sushynski Andrei

Hi guys,

Is it possible to capture the tap event when we tap on a point marker or a data point? I can see there’s a DataPointSelectionModifier for WPF, but there’s nothing for iOS. Our goal is to show a popup (tooltip) on the point marker when the user taps on it.

Thanks,
Lazar Nikolov

Hello, I’ve been trying to create a SCIUniformHeatMap, but I only get a blank, black screen.
Can anyone recommend why colors and the graph aren’t showing up? Thanks

var ecmSurface: SCIChartSurface = SCIChartSurface()
var ecmDataSeries = SCIUniformHeatmapDataSeries(xType: .double, yType: .double, zType: .double, xSize: ReviewModeData.MATRIX_COLUMNS, ySize:ReviewModeData.MATRIX_ROWS)
var heatmapRenderableSeries: SCIFastUniformHeatmapRenderableSeries = SCIFastUniformHeatmapRenderableSeries()
private let countColors = 6
private var colorRGBArray: [UIColor] = [
UIColor(red: 0.0/255.0, green: 0.0/255.0, blue: 131.0/255.0, alpha: 1),
UIColor(red: 0.0/255.0, green: 0.0/255.0, blue: 255.0/255.0, alpha: 1),
UIColor(red: 0.0/255.0, green: 255.0/255.0, blue: 255.0/255.0, alpha: 1),
UIColor(red: 255.0/255.0, green: 255.0/255.0, blue: 0.0/255.0, alpha: 1),
UIColor(red: 255.0/255.0, green: 0.0/255.0, blue: 0.0/255.0, alpha: 1),
UIColor(red: 128.0/255.0, green: 0.0/255.0, blue: 0.0/255.0, alpha: 1)
]
for i in 0..<ReviewModeData.MATRIX_COLUMNS {
for j in 0 ..< ReviewModeData.MATRIX_ROWS {
ecmDataSeries.update(z: ecm2DMatrix[i][j], atX: i, y: j)
}
}
var colorZValueArray: [Double] = determineColorMapValues(clim1: 0, clim2: 1);
var colorMap = SCIColorMap(colors: colorRGBArray, andStops: colorZValueArray as [NSNumber])

//configure ECM heatmap
heatmapRenderableSeries.minimum = ReviewModeData.ECM_CLIM1
heatmapRenderableSeries.maximum = ReviewModeData.ECM_CLIM2
heatmapRenderableSeries.dataSeries = ecmDataSeries
heatmapRenderableSeries.colorMap = colorMap!

Hello!

I am building an iOS framework that sits on top of SciChart for app developers within our company. I’d like to provide my own default SCIThemeColorProvider object for charts in my framework. Easiest way to do that is to include my own theme plist in my framework’s bundle, but I cannot currently do that (as of 2.0.0.1643) because the SCIThemeColorProvider initializer assumes it’s either in the “Charting.SciChart” bundle or the main bundle.

I’d like to propose modifying SCIThemeColorProvider to add another initializer that takes a bundle ID, like this:

/**
 * Creates theme provider based on specified style
 *
 * @param themeKey The key of style which should be used as base for this theme provider
 *
 * @param bundleIdentifier The identifier of the bundle containing the theme plist identified by 
 *                         themeKey; if nil, the main bundle is used.
 */
- (nullable instancetype)initWithThemeKey:(nonnull NSString*)themeKey bundleIdentifier:(nullable NSString*)bundleIdentifier;

The existing -initWithThemeKey: initializer would call through to this initializer with a nil bundle ID.

I have attached a patch file with this proposed change. Could this be added to an upcoming build?

Hey again!

Is there kind of a delegate that notify me if the user uses the crosshair/SCIRolloverModifier?
I want to know which value he is inspecting to show him further information outside the chart for this datapoint.

Thanks and Greeting
Benedikt

Good day guys. I have download SciChart_iOS_SDK_4.2.0.5533 on Macbook M1. And try to integrate ios-arm64_armv7 verions to my project. I have added SciChart.xcframework to frameworks in Xcode 12.4. But the build is failed with a few errors:

1. unable to load standard library for target arm-64-apple-ios9.0
2. Failed to build module ‘SciChart’ from its module interface, it may have been damaged or it may have triggered a bug in Swift compiler when it was produced.

Can you tell me please did I use the right version of SciChart.xcframework for apple silicone? And how to solve this errors?

I cannot get SCILinearGradientBrushStyle working on a donut chart. Only radial gradients work

Here is my code sample:

let segment = SCIPieSegment()
segment.fillStyle = SCILinearGradientBrushStyle(colorCodeStart: 0xff007aff, finish: 0x4D007aff, direction: .horizontal)
segment.value = 100.0
segment.title = "Segment"
donutSeries.segments.add(segment)

The segment just renders a flat color

Is the styleFor function of SCIPaletteProvider that was in Version 2.0 not implemented in Version 4.8?
Also, are there any plans to implement it?

I am upgrading from SciCharts 2.0.1 to SciCharts 4.3.
When the color was set using SCI Palatt Provider in Version 2.0, the memory used was 200M, but in Version 4.3, the memory used may consume as much as 1G.
I tried to devise it by setting the Sampleing Mode, but it is not very effective.

SCI Charts is used to display the spectrum data of audio data while playing the sound.

Hi, guys

Is Stacked Columns support autoRange by visible range?

I’m interesting in because sometimes my data looks like at the screenshot “huge_data.png”

And even when i have scrolled outside this data it’s looks like at the screenshot “scrolled_outside.png”

Best regards,
Sushynski Andrei

Hi, guys

I’m very sad because of you.

On my chart i’m added SCIZoomPanModifier with clip mode SCIClipMode_ClipAtExtents. And it well worked before i have updated lib to ‘2.0.1.1748’. Now it’s works the same way as SCIClipMode_StretchAtExtents. But i don’t want to zoom by scrolling at the edge of data.

Can you look at it and fix as soon as possible?

Best regards,
Sushynski Andrei

We have lots of Point Markers in our series that overlap, so we’re trying to find a way to Cluster them in Android and iOS. I can see that there is an SCIPointMarkerClusterizer. Can you give us some pointers on how we can achieve point marker clustering and/or spacing?

Hi,

Please take a look at the attached screenshot first.

I have a chart configured to draw some data. I need to draw SCIAxisMarkerAnnotation on Y axis. And it seems that annotation has alignment by right side of axis area. Is there a possibility to change it to left side of axis area?

How would I go about doing this in swift?

When calling SCIThemeManager.ApplyTheme(Surface, SCIThemeManager.SCIChart_Bright_SparkStyleKey); within a the code-behind running on the iPhoneSimulator running iOS 13.2, the iOS system throws an Objective-C exception with the following details:

Foundation.MonoTouchException: 'Objective-C exception thrown.  Name: NSInternalInconsistencyException Reason: applyThemeProvider: must be implemented in subclass

Although the exact same pattern works without issue on the corresponding Xamarin.Android project and the examples that call this line seem to be OK too, it is not clear from any documentation what this issue could be. Any advice would be appreciated.

I am trying to zoom and pan the line graph in my macOS app the zoom is working but I am not able to pan through the zoomed graph its not at all scrolling and also I wanted to know how can I add click event on the graph so that I can display some more data on click at a particular coordinate apart from tooth. I have shared my view controller. I will really appreciate any help as I have spend a lot of time figure this out and have no clue where to go from here.

Hi, guys

My axis is SCICategoryDateTimeAxis type. And using SCIZoomPanModifier (SCIClipMode_ClipAtExtents) to scroll chart

I’m using setVisibleRangeLimit: method to clip the axis during ZoomExtents

Until v. 2.0.0.1511 it’s work like a charm. But now something had have broken. And it’s doesn’t allow me to scroll chart at right way. It show me all of the data range on chart or only left side.

So can you fix it?

Best regards,
Sushynski Andrei

I am placing annotations at the top of every bar in a stacked bar graph (and a standard bar graph on another screen) showing the total of all the stacked bars by iterating through my data, generating the sum, and placing it at the correct x,y (an incredibly manual process that seems like there should be much easier to do but I found no other way to do it – if there is a better way, I would love to hear it, but that’s a secondary issue and not my current problem).

I also have a legend where the user can select / deselect series.

When the user selects/deselects a series from the legend, I need to hide all my annotations and then recreate them because the sums of the stacked bars has changed (or if no bars are showing, remove my annotation completely). My assumption is I could reiterate through my data and check series to see if they are visible (isVisible) and recalculate the sums and recreate the annotations (another very manual process but I can probably work it out).

My primary problem is I see no way for me to intercept that this legend event occurred. The series get hidden internally and I never have a chance to do anything with the annotations. It seems like this may be doable on other platforms but I’m at a loss on iOS. There is no delegate / block event handler / etc.

Any thoughts?

I would like to change the color of chart legend, but have failed to find information on how can I do this for iOS. Any sort of tutorial would be highly appreciated.

Worst case scenario would be to create a custom theme that is based on Bright Spark theme and update legend parameters there, but for this I would need to know what exactly does Bright Spark theme looks like.

Looking forward to any recommendations.

Best Regards,
Paul.

Hi, guys

Please take look at:
http://prntscr.com/gmmib5

So my question is

Is there a way to highlight a line of a gridlines to which the label belong? It can be a color changed or something similar that can be easily perceived by the user.

Best regards,
Sushynski Andrei

Hi.
I’m in process optimizing my app.
I’m using Objective-c.

I’d found some memory leaking issues and successfully fixed some of that.

A first issue was about ‘renderableSeries’ under ‘SCIChartSurfaceView’.
If you set class of UIView as ‘SCIChartSurfaceView’ in interface builder and make outlet without setting ‘strong’ or ‘weak’ in .m file,
It never get released automatically and will stay retained on memory.
For me, it caused about 90MB of memory leaking.
But I could solve this issue manually by putting -(void)clear; method of renderableSeries in viewWillDisappear method.

Another issue is about ‘SCIDateTimeDeltaCalculator’ and ‘SCINumericDeltaCalculator’.
It causes about 50MB of memory leaking.
But problem is, I couldn’t find neither where it’s been called nor how I release this manually.

I will be waiting for your answer.

Thanks.

+)
(lldb) po SciChartVersionNumber
0x3ff0000000000000

(lldb) po SciChartVersionString
0x474f525029232840

I wanted to know what version I’m using.. but i couldn’t know… what version am i using..?

SplineLineRenderableSeries doesn’t render curved graph line properly in Swift , it renders stepped line for the data series .For reference please check the Screenshot attached ,ECG line(Green) rendered as stepped line (Marked by rectangle). Let me know anything I need to update in my code

Please find below the code for initialisation go the graph and updating the graph same. I am updating graph realtime with same DataSeries.

1. Graph initialisation code

   func init_ECG_Chart()
   {
   //Remove Theme From Chart By Apply & Remove & Change Border color
   SCIThemeManager.applyTheme(to: self.ecg_Chart_Surface, withThemeKey: SCIChart_Bright_SparkStyleKey)
   SCIThemeManager.removeTheme(byThemeKey: SCIChart_Bright_SparkStyleKey)

   self.ecg_Chart_Surface.isOpaque = false
   self.ecg_Chart_Surface.backgroundColor = .clear
   self.ecg_Chart_Surface.renderableSeriesAreaBorderStyle = SCISolidPenStyle(color: .clear, thickness: 0)
   
   //Line
   let lineSeries = SCISplineLineRenderableSeries()
   
   lineSeries.strokeStyle = SCISolidPenStyle(color: ecgSelectedColor, thickness: 2.0)
   lineSeries.dataSeries = ecgLineDataSeries
   

   // lineSeries.resamplingMode = SCIResamplingMode_None //Resampling off
   // lineSeries.resamplingMode = SCIResamplingMode_Auto //Resampling off

   let xAxis = SCINumericAxis()
   xAxis.axisAlignment = .bottom
   xAxis.drawLabels = false
   xAxis.drawMajorGridLines = false
   xAxis.drawMinorGridLines = false
   xAxis.drawMajorTicks = false
   xAxis.drawMinorTicks = false
   
   let yAxis = SCINumericAxis()
   yAxis.axisAlignment = .left
   yAxis.drawLabels = false
   yAxis.drawMajorGridLines = false
   yAxis.drawMinorGridLines = false
   yAxis.drawMajorTicks = false
   yAxis.drawMinorTicks = false
   yAxis.autoRange = .never   //Stop auto ranging axis
   yAxis.visibleRange = SCIDoubleRange(min: -32, max: 96)
   

   // yAxis.visibleRangeLimit = SCIDoubleRange(min: -32, max: 96)

   yAxis.growBy = SCIDoubleRange(min: 0.2, max: 0.2)
   
   SCIUpdateSuspender.usingWith(self.ecg_Chart_Surface) {
   
       self.ecg_Chart_Surface.xAxes.add(items: xAxis)
       self.ecg_Chart_Surface.yAxes.add(items: yAxis)
       self.ecg_Chart_Surface.renderableSeries.add(items: lineSeries)
   
       //self.ecg_Chart_Surface.chartModifiers.add(items: SCIZoomExtentsModifier(),SCIPinchZoomModifier())
   }
   

   } //Init ECG

2. Graph updation code

   func update_ECG_Chart(xValues:SCIDoubleValues,yValues:SCIDoubleValues)
   {

   SCIUpdateSuspender.usingWith(self.ecg_Chart_Surface) {
   
       self.ecgLineDataSeries.append(x: xValues, y: yValues)
     //  self.ecg_Chart_Surface.zoomExtents()
   
       self.ecg_Chart_Surface.zoomExtentsX()
   
   }
   

   } //Update ECG

Hi,

I’m trying to limit the x-axis panning up to an annotation that I’ve drawn on the graph. This annotation can be beyond the current data’s position (i.e. data’s timestamp is at 5/4/2017 11:00:00, annotation’s position is at 5/4/2017 16:00:00). Is there a method, or any way that I can use to limit the x-axis panning up to the annotation’s position instead of limiting it to the data series’ max X?

Regards.

Hi, guys

I want to show two renderableSeries on one chart view. These series have common x-axis (SCICategoryDateTimeAxis) and separate y-axes(SCINumericAxis). Only one of y-axis is visible at chart view. Also the data series of visible renderable series updated by scrolling to left or to right. So for displaying on one view i’m using:

[y1Axis setGrowBy: [[SCIDoubleRange alloc] initWithMin:SCIGeneric(0.3) Max:SCIGeneric(0.07)]];
[y2Axis setGrowBy: [[SCIDoubleRange alloc] initWithMin:SCIGeneric(0.0) Max:SCIGeneric(5)]];

So it’s look good at start (Correct_zooming.png). But after some scrolling it decrease axis extents of invisible y-axis (decrease.png).
Or even breaks down (broken.png)

For test i’m using SCIFastOhlcRenderableSeries and SCIHorizontallyStackedColumnsCollection readerable series.
Data series for SCIHorizontallyStackedColumnsCollection is initializated like:

    [volumeSerie1 updateAt:index Y:SCIGeneric(100000 / [multiplier doubleValue])];
    [volumeSerie2 updateAt:index Y:SCIGeneric(500000 / [multiplier doubleValue])];

So can you look at it?
Or what way i should implement this behavior?

Best regards,
Sushynski Andrei

I’m trying to add annotations on a chart but they are rendering above my legend.

Initially (similar to most of the demo code I’ve seen), I setup my modifiers, then created my series and animated them in — then added my annotations (adding to annotationGroup). This created a timeline of blank chart surface with legend (good so far), annotations popping in before the chart series animated in (weird / not good) and on TOP of the legend (really bad), then the animation of the series after that.

I’ve tried about everything I can think of and the best I’ve been able to do is use a completion block of the animation rendering the series — and moved my chart modifiers (and legend) into that completion block. If I put the annotations in the completion block, they will render after the chart modifier and I have the same problem (even if placed after the chart modifiers). I have to set the annotations before the animation, and then the chart modifier in the completion block will work and the legend will be above the . Of course, this is a bit odd too — as first my annotations pop up by themselves on the blank surface, followed by my series animating in, then at the end of the 2 second animation, the legend just pops in.

I really would like my legend to be rendered first on the blank surface and the annotations and chart series to animate in together under my legend. I’m gathering that’s unlikely (at least the animation part) — but is there anyway I can place my legend first and still have the annotations go under it? It feels like the layers should be: modifiers > annotations > rendered series. I also I’ve read this order before in some WPF docs I believe, but doesn’t seem to be respected on iOS?

UPDATE: My current work around isn’t sufficient because I really need access to the renderable series to create the annotations which means I really can’t defer my chart modifiers (i.e. legend) until after the annotations. Additionally, if I need to update (remove / re-add) an annotation due to a series being deactivated in the legend, now my annotations are on top of the legend again.

I’m trying to clear a SCIUniformHeatmapDataSeries after connecting it to a SCIChartSurface, but it is very slow and energy consuming. However, if I clear the data series before it is connected to the sci chart, then the clearing is pretty fast. How can I clear the data series after it is connected to the chart surface quickly? Do I have to make a new data series, clear it, and connect to the scichartsurface every time I want to clear a data series? This is for iOS by the way.
EDIT: code

for i in 0..<data.MATRIX_COLUMNS {
        for j in 0..<data.MATRIX_ROWS  {
            data.ecm2DMatrix[i][j] = Double.nan
            SCIUpdateSuspender.usingWith(charts.ecmSurface) {
                self.data.ecmDataSeries.update(z:self.data.ecm2DMatrix[i][j], atX: i, y: j)
            }

I want to hide the axis and the place occupied by the axis on xammarin.iOS, i’am using below code to do the same, the problem here is it does hide the axis but it is not removing the place occupied by axis,

Axis.IsVisible = false;

is it the right way to hide the axis and remove the place occupied by it, or am I missing something here.

Hi all,
I am using the iOS SciCharts version to implement a heatmap series in my application. I am testing out the heatmap by providing a test series of random 100 zValues that range from 1-200. The Heatmap with the stops below just appears blue (see image). My suspicion is that either I am not updating the zValues correctly or the andStops is too low. Can anyone provide insights on what could be the issue?

//Test zValues
let SpectTestArray: [Double] = [ 12,  14, 68, 137, 164, 124, 124, 122, 162, 128, 45, 129,  40,  91,  53, 159,  77,  59,   0,  91, 92,  73,  77,  67, 163,  69, 149, 115,  17,  85, 119, 129, 186,  93,  80,  34, 159, 115,  65, 181, 159,  67, 152,  29,   6, 162,  51, 196, 186, 122, 114, 171, 159, 116,  20, 102,   4, 174, 144, 160, 89,  51,  89, 130, 172, 186,  40, 174,  20, 120, 88, 151, 127, 167,  10,  49, 198,  67, 184, 197, 152, 193, 196, 163,  18,  77,  17, 143, 124, 115, 1, 115, 126,  22,  35,   6,  58, 121,  77,   5]

let colors = [UIColor.fromARGBColorCode(0xFF00008B)!, UIColor.fromARGBColorCode(0xFF6495ED)!, UIColor.fromARGBColorCode(0xFF006400)!, UIColor.fromARGBColorCode(0xFF7FFF00)!, UIColor.yellow, UIColor.red]

CH1HeatMapRenderableSeries = SCIFastUniformHeatmapRenderableSeries()
        CH1HeatMapRenderableSeries.dataSeries = CH1SpectDataSeries
        CH1HeatMapRenderableSeries.minimum = 0.0
        CH1HeatMapRenderableSeries.maximum = 200.0
        CH1HeatMapRenderableSeries.colorMap = SCIColorMap(colors: colors, andStops: [0.0, 0.2, 0.4, 0.6, 0.8, 1.0])
        spectchartsurface?.renderableSeries.add(CH1HeatMapRenderableSeries)

        var Spectvalues = SCIDoubleValues(capacity: 100)

        for n in 0...SpectTestArray.count-1 {
            Spectvalues.add(SpectTestArray[n])
        }
//        print(Spectvalues)
        CH1SpectDataSeries.update(z: Spectvalues)