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0 votes
13 views

Hello, I’m trailing your library right now. I would like to be able to move the graph around as well as a cursor on the graph. So I enabled both SCIZoomPanModifier and SCICursorModifier. But since both use one finger panning, the result wasn’t that good. Do you have any guidance for solving the conflict and letting them working together? I’m thinking to do it in the following way: if the touch location is within certain pixel range of the cursor, panning action will move the cursor, otherwise it moves the graph. Is it possible? Thanks

0 votes
16 views

Hello, I’m trailing your library right now. I’m wondering how to change the background color of the legend box. The document page for LegendModifier shows coming soon. I don’t see such option in LegendModifier definition in Xcode either. Thanks

1 vote
35 views

We’d like to customize the look of our legends. We have 4 legends displaying different data, but right now the only thing we can change is the Theme. Is there any way to customize the legend items, like add some icons, change the point marker shape and size, change the check box icon etc…

P.S.: I’m not a trial user. We have an iOS, Android and WPF licenses purchased.

Project info:
Xamarin.iOS
SciChart.iOS 2.2.2.854

0 votes
25 views

I have a simple line renderable series in iOS with an SCIDateTimeAxis for X and an SCINumericAxis for Y. At this point all I’m trying to do is format the Y-axis labels and cursor labels as currency. According to the documentation, this should be as simple as:

yAxis.textFormatting = "$%f"

But it does not appear to properly use this formatting. The Y-axis is showing values like “$%f1400” when formatting a value for 14.

So, I instead attempted creating my own label provider by overriding SCINumericLabelProvider:

class CurrencyLabelProvider: SCINumericLabelProvider {

static let formatter: NumberFormatter = {
    let formatter = NumberFormatter()
    formatter.numberStyle = .currency
    return formatter
}()

override func formatLabel(_ dataValue: SCIGenericType) -> NSAttributedString! {
    let value = dataValue.doubleData
    let string = CurrencyLabelProvider.formatter.string(from: NSNumber(value: value))!
    return NSAttributedString(string: string)
}
}

Then assigning:

yAxis.labelProvider = CurrencyLabelProvider()

This works to properly format the axis labels. So, I also override SCINumericLabelProvider to provide the cursor labels:

 override func formatCursorLabel(_ dataValue: SCIGenericType) -> NSAttributedString! {
    let value = dataValue.doubleData
    let string = CurrencyLabelFormatter.formatter.string(from: NSNumber(value: value))!
    return NSAttributedString(string: string)
}

This then properly formats the cursor label for the Y-axis- but it also formats the X-axis cursor:
Formatted Cursor

At this point, the X-axis is already assigned an SCIDateTimeLabelProvider- the X-axis is not assigned CurrencyLabelProvider. But it seems to be overridden by the Y-axis label provider or simply unused. The X-axis labels are formatted as dates properly, but X-axis cursor values are just numbers when not being interfered with by the Y-axis label provider.

Am I misunderstanding something or are these all bugs in the iOS SDK? We’re currently evaluating whether this package will meet our needs and it certainly appears to be riddled with issues.

0 votes
124 views

How would I go about doing this in swift?

1 vote
155 views

We’re trying to make multiple legends on the screen, for example, 1 for the left axis and its data series, 1 for the right axis and its data series. I can see it’s possible in the WPF documentation, but in the iOS documentation it says “Coming soon!”. Do we need to wait for a future release of the Xamarin.iOS library or is it possible somehow now?

By the way, I’m not a trial user. We’ve just purchased a license today.

Thanks,
Lazar Nikolov

0 votes
725 views

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…

0 votes
690 views

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..?

0 votes
796 views

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

0 votes
0 answers
903 views

I have a chart that has Real Time updates. I would like to create a custom legend modifier to display the latest value in the legend as well as other information. Is it possible to do this and if so where can I find an example?

0 votes
0 answers
894 views

I’ve been pouring through the documentation and examples and cannot find an example of this. Has anyone been able to accomplish this and willing to share an example? Thanks.

0 votes
902 views

When I embed my view controller in a navigation controller the top of the chart is hidden behind the navigation bar. So I went to the storyboard and found the view controller attributes section called “extend edges” and turned off the option called “under top bars”. This fixes the top of the chart. Now the bottom of the chart drops off the bottom of the screen. The x-axis is completely missing. Does SciChart support this case?

0 votes
981 views

I need someone to develop this chart for me and I will provide a JSON, for the data.

https://www.youtube.com/watch?v=t29Zl-7QyMw&t=215s
Please go to time line 3:22

I have been struggling in the documentation and if someone can create this chart for me, I will be more than happy to pay you.

The chart would have to be created for Swift 4 please.

Robert

1 vote
1k views

Trying to install SciChart.iOS NuGet package for Xamarin.iOS project results the following error:

Package SciChart.iOS 2.0.1.527 is not compatible with xamarinios10 (Xamarin.iOS,Version=v1.0). Package SciChart.iOS 2.0.1.527 supports: xamarinios (xamarin-ios,Version=v0.0)

Wondering what the heck is “xamarin-ios,Version=v0.0”? It must be xamarinios10. We’re considering to buy SciChart but right now our build server is stuck on this error. As a workaround, we raname xamarin-ios to xamarinios10 in the lib directory but this not an option for a cloud build server.

  • rubs00 asked 1 year ago
  • last active 1 year ago
0 votes
1k views

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

0 votes
1k views

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

0 votes
1k views

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?

0 votes
1k views

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

0 votes
0 answers
1k views

Hi, guys

Is there possibility to show CursorModifier by simply changing switch state?

According to custom tooltip behaviour it is possible for SCITooltipModifier. And it’s work at v 2.0.0.xxxx

So can you provide a code with redefinitions of private Api methods for this situation?

UDP: What is the best practice to customize tooltip’s data view?

Best regards,
Sushynski Andrei

0 votes
1k views

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?

  • Chui asked 1 year ago
  • last active 1 year ago
0 votes
1k views

Hi, guys

Is it possible to use negative index for methods:

-(void) insertAt:(int)index X:(SCIGenericType)x Open:(SCIGenericType)open High:(SCIGenericType)high Low:(SCIGenericType)low Close:(SCIGenericType)close;

-(void) updateAt:(int)index Open:(SCIGenericType)open High:(SCIGenericType)high Low:(SCIGenericType)low Close:(SCIGenericType)close;

Can you give an answer?

Best regards,
Sushynski Andrei

0 votes
1k views

Hi, guys

What is the minimum required sdk version for SciChart v.2?

Such as i have some trouble with IOS 9. See attachment.

Same behavior at real devices.

Can you look at this?

Best regards,
Sushynski Andrei

0 votes
1k views

Hi, guys

Is it possible to set min and max zoom constraints for renderable serie with one element ?
Default value (default_zoom.PNG) is too big.

Can you look at this?

Best regards,
Sushynski Andrei

0 votes
1k views

Hi, guys

I’m interesting in alignment for line at SCIAxisMarkerAnnotation. For example for top, middle and bottom position. Like at alignment_to_top.png. So is there some possibility for this?

UDP: Is there possibility to hide annotation from chart view?
Something like setHidden: for UIView.

Best regards,
Sushynski Andrei

0 votes
1k views

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

0 votes
1k views

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

0 votes
1k views

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

0 votes
1k views

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

0 votes
1k views

Hi, guys

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

0 votes
1k views

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

0 votes
2k views

Hi, guys

My x axis is SCICategoryDateTimeAxis class type. And it’s limited by VisiableRangeLimit like:

[xAxis setVisibleRangeLimit:[[SCIDoubleRange alloc] initWithMin:SCIGeneric(firstItem – (lastItem – priorItem))
Max:SCIGeneric(lastItem + (lastItem – priorItem))]];

Also for scrolling my content inside chart:

SCIZoomPanModifier * zpm = [[SCIZoomPanModifier alloc] init];
[zpm setModifierName:@"PanZoom Modifier"];
[zpm setClipModeX:SCIZoomPanClipMode_ClipAtExtents];

Like a description SCIZoomPanClipMode_ClipAtExtents says:
“forces the panning operation to stop suddenly at the extents of the data” – but it’s not working constantly.
Sometimes it’s allow to scroll outside the range. Like on the attached image.

So my question is how to limit scrolling by min and max value?

Best regards,
Sushynski Andrei

0 votes
1k views

Hi there.

It’s has been asked here:
https://www.scichart.com/questions/question/custom-annotation

So, Is it possible to draw dashed line annotation at the current version 1.2.3.982?

Best regards,
Sushynski Andrei

0 votes
1k views

Hi, guys

Is there possibility to show tooltip by simply changing switch at the settings?
Not by tapping at the chart area as it implemented now.

Best regards,
Sushynski Andrei

0 votes
1k views

Hi, guys

I’m working with SCIDateTimeAxis type of the X-axis. So my question Is there possibility of skipping non-value period?

Best regards,
Sushynski Andrei

0 votes
1k views

Hi, guys

it seems that i had found a mistake:

At SCICursorModifierStyle class if i try to set up axisVerticalTooltipCornerRadius property it lead to changing of axisHorizontalTooltipCornerRadius

Please take a look

Best regards,
Sushynski Andrei

0 votes
1k views

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.

0 votes
1k views

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?

0 votes
2k views

Hi,

I’ve been looking through ways to have to y-Axis scale for really small changes/values.

For example, I’m attempting to plot 10 values between 0.99300 to 0.99400, and the changes between points can vary between 0.001 to 0.0001 or so (basically, really small changes)

However, my y-Axis seems to always start at 0 and the y-Axis major ticks are always at most a 0.1 difference, making the graph look flat.

I’d like to achieve the following:
– Scale to the smallest value i can scale to.
– Have my y-Axis to not necessarily start at 0.

I’ve tried the following:

Setting up y-Axis:

    self.yAxis = [SCINumericAxis new];
    [self.yAxis setStyle:axisStyle];
    self.yAxis.axisId = @"yAxis";
    [self.yAxis setGrowBy:[[SCIDoubleRange alloc]initWithMin:SCIGeneric(0) Max:SCIGeneric(0.1)]];
    [self.yAxis setAutoRange:SCIAutoRange_Always];
    [self.chartSurface attachAxis:self.yAxis IsXAxis:NO];

Regards.

1 vote
1k views

Hi,

I’m attempting to plot on a mountain graph with a DateTimeAxis for the x-axis and I noticed that the plotted time is inaccurate.

The data that am attempting to put in has the following NSDate value: 2017-01-06T10:09:25+0000
Correct me if am wrong, but I believe the time on the axis that ought to be displayed should follow the device’s system timezone? In my case, it is +0800, setting the time to be about 6:09:25 pm

However, the plotted time ends up showing the point to be plotted at 2:09:25 instead.

I’ve tested with a date formatter and it displays the time as it should (6:09:25 pm).
I don’t think I configured anything regarding the axis’s time format, and the insertion of data was done as below:

[self.mountainSeries appendX:SCIGeneric(m.timestamp) Y:SCIGeneric(m.mid)];
[self.chartSurface invalidateElement];

Also, to add on, if I were to extract the XMax value from the axis (in this case, is the timestamp as above), it returns me as such: 2017-01-06 18:09:25 +0000

Thank you.

0 votes
1k views

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.

  • Elle Yeoh asked 2 years ago
  • last active 2 years ago
1 vote
3k views

I’ve got error message during compilation:

 ld: bitcode bundle could not be generated because '.../Frameworks/SciChart.framework/SciChart' was built without full bitcode. All frameworks and dylibs for bitcode must be generated from Xcode Archive or Install build for architecture armv7

I temporary disabled bitcode for target. Will you fix it in the next build?

2 votes
2k views

From your documentation:

4.9 Annotations

SciChart features a rich Annotations API, that allows you to place UIKit UIElements over the chart.
SciChat provides a number of built-in annotations, but you can also create your own.

SCIBoxAnnotation, SCILineAnnotation and SCITextAnnotation are cool, but sometimes it’s not enough.

Is it possible to render UIView on the chart (at least UIImage)?
Is it possible to draw dashed line annotation?
Could you provide an example of creating custom annotation class?

1 vote
2k views

Hello!

Please take a look at the attached screenshot first.

I have a chart configured to draw real-time trading data. X axis type is DateTime. Y axis type is Float. I need to draw vertical expiration time line.

I tried to draw coordinate relative line annotation as follows:

var date: NSDate = NSDate()

let lineAnnotation = SCILineAnnotation()
lineAnnotation.xAxisId = self.axisXId
lineAnnotation.yAxisId = self.axisYId
lineAnnotation.coordMode = .SCIAnnotationCoord_RelativeX
lineAnnotation.style.linePen = SCIPenSolid(color: Style.Chart.ExpirationDateLine.Color, width: Style.Chart.ExpirationDateLine.Width
lineAnnotation.xStart = SCI_constructGenericTypeWithInfo(&date, .DateTime)
lineAnnotation.xEnd = SCI_constructGenericTypeWithInfo(&date, .DateT            

self.chartSurface.annotation = lineAnnotation
self.chartSurface.invalidateElement()

I tried to play with different coordMode values. Line does not appear. Could you help me with this task?

Showing 43 results