Category: iOS

Hello,
I’m following along with the tutorial. I installed using the pod. I am at the end of Tutorial 3 and am getting an error. Use of unresolved Identifier ‘SciGeneric’. I can see I have the wrapper file in my project. Any Ideas what I’m doing wrong?

Thanks
Warren

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

Hi,

I have understood that you will start supporting macOS in the near future. Are we talking Q3, Q4 or 2018?

Any hint, even one with lots of caveats will be greatly appreciated…

Thanks
/Peter

Hi!
I am going through the showcase example for the spectrogram and I had a confusion on the sizeX and Y parameter of SCIUniformHeatmapDataSeries. Are these sizes as per the width and height of the surfaceChart ? I am going to plot an array of data. How do I determine the correct sizes for X and Y.
Moreover, is it necessary that the size array used for updating the dataSeries has to be (xSize*ySize)?

I wanna make chart area background color white.
And I implemented it like below.

surface.xAxes.defaultAxis()?.style.gridBandBrush.color = .white
surface.yAxes.defaultAxis()?.style.gridBandBrush.color = .white

Then, some part became white, but not whole area.
I wanna remove those black areas, so I used theme manager, and it worked.

SCIThemeManager.applyTheme(toThemeable: surface, withThemeKey: “SciChart_Bright_Spark”)
surface.xAxes.defaultAxis()?.style.gridBandBrush.color = .white
surface.yAxes.defaultAxis()?.style.gridBandBrush.color = .white

But, this is not reasonable. I use that theme, only to change background color.
Is there another way to acheive white background?

The wick for the up candlestick go through the body while the down candlestick do not. How can I make the wick inside the body part disappear? I didn’t change any settings of stroke and fill style. Thanks.

let candlestickSeries = SCIFastCandlestickRenderableSeries()
candlestickSeries.dataSeries = dataSeries
candlestickSeries.yAxisId = "right"

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

When there are 2 or more horizontal/vertical axis, how to hide the cursor label for specific axis?

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

Hello

Is it possible do detect taps/selection/click over the PointMarkers?

Thanks!

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

How would I go about doing this in swift?

I’ve downloaded yesterday showcase example from your github: https://github.com/ABTSoftware/SciChart.iOS.Examples

After providing license key other samples work ok except Audio Analyzer (and the last sales dashboard – shows blank screen).

Problems is somewhere with SpectrogramSurfaceController ( If I commend it out wave plot and fft plot works)

Xcode shows there is some bad memory access at:
[SCIFastUniformHeatMapRenderableSeries internalDrawWithContext:WithData:]
cblas_sscal

Tested using:
iPhone 5SE
iOS 11.2.5
Xcode 9.2

Hello,
I would like to place a title for an X axis to the right of axis labels. I am easily able to achieve this on Android (see attached screenshot), but I cannot find relevant properties (axisTitlePlacement etc.) in iOS version of SciChart.

In the last section of this article in documentation you write that it is possible, however the links are dead (and frankly, the method names look suspiciously Java-ish to me).

The website has changed recently. I do not see any way to locate my existing support tickets. When I click on Developers–>Support it only gives me the option to create a new ticket.

Hey everyone, my team currently has Scicharts for WPF set up and functioning the way we want it too.

We are moving to Xamarin and have tested Scicharts in a Xamarin.Forms project working for Android/iOS and Windows WPF.
The next step was to install Visual Studios for Mac, and setup a new Xamarin.Forms project and pull the code from the windows version of our Xamarin.Forms project. For windows we use a custom renderer to get the scicharts to work for all platforms available on the windows version. For Mac, we are trying to get a custom renderer set up to load the swift version of the Scicharts for Mac. It’s not going so well.

Can anyone provide details on if it’s possible to get a xaramarin.forms project to load the scicharts for mac framework?

Thanks

NOTE** I picked iOS because for some reason MacOS wasn’t in the list of platforms

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’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 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

Could I have a date please.

is it possible for the December or more likely for January?
robert

I’m trying to accomplish 2 things:

First is that I would like to not be able to zoom out past the data, it does no good to zoom out if there is no more data to see. It would also be nice to have a little bounce/spring back if you zoom to far, like when zooming out on an image on an iPhone.

The second is that I only want to be able to pan to the data. If zoomed all the way out, then trying to pan would do nothing. If zoomed in you should be able to scroll around, but only to the end of the data.

I believe I have the first one accomplished by setting the maximalZoomContrain to be the same as the data range, although this doesn’t allow any kind of bounce.

What need to be done to make this work, this seems like a feature that is built into the SciChart Modifiers.

Hi,
we are using an UICollectionView to display different kinds of views in our application, including charts created with SciChart. We noted that every time a cell with a SciChart is loaded, some memory is allocated and not freed when the cell disappears, which leads to a massive memory leak and eventually crashes the application.
Is there a way to free SciChart resources on demand? Or maybe you suggest another solution to solve this issue?
Regards,
Anna

Hey everyone,

SCIThemeColorProvider has styling properties for individual types of chart elements (annotations, axes, grid lines, renderable series). How can multiple colours be assigned to individual RenderableSeries in case there are more than one?

For example, a stacked column chart will surely have more that one data series and it appears that current implementation of SCIThemeColorProvider doesn’t take this into account from architectural point of view.

Am I missing something?

Thanks,
Igor

When scrolling, some weird bold lines appear and disappear.
You can see it on image files attached.
How can i fix it?

Hello,

I would like to be able to change the rollover tooltip cursor color. It seems to be defaulted to the lineseries areastyle property color. I would like to be able to change it to a different color. I have not been able to find anything in the docs regarding how to do this.

Thank you

i want to implement a custom modifier to track the users touch, similar to rollover but without displaying a view

I tried to do this by implementing SCIGestureModifier and overriding all the onTouches methods, but – no matter the user behaviour – the modifier will always receive an onTouchesCancelled event after about a second and receive no more of these events after that.

What does work is implement onPanGesture to actually track all the user’s movement but i don’t see any way of how you would receive a touch up event this way (which i do need)

Is there any fundamental misunderstanding on how this should work on my side?

I am plotting a line chart and in it I have a requirement to plot different sets of points in different colours. How can I achieve this ?

I am setting the colour as below

[[(SCIFastLineRenderableSeries*)self.renderableSeries style] setLinePen: [[SCIPenSolid alloc] initWithColor:[UIColor redColor] Width:1]];

However, this sets the colour for the whole data series in line chart.

I have attached the screenshot of the desired output.

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

Hello,

I would like to add a corner radius (to give rounded corners) to the SciChart rollover tooltip in iOS. I saw that there is a “tooltipCornerRadius” property in “SCITooltipModifierStyleProtocol”, but I am having trouble figuring out how to use this. Can someone point me in the right direction?

Thank you.

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 ?