Fix CategoryAxis.ItemSource when not associated with a BarSeries by VisualMelon · Pull Request #1912 · oxyplot/oxyplot

VisualMelon · 2022-08-13T10:20:10Z

Fixes #1847 .

Checklist

I have included examples or tests (existing CategoryAxis examples suffice to test the fix)
I have updated the change log
I am listed in the CONTRIBUTORS file
I have cleaned up the commit history (use rebase and squash)

Changes proposed in this pull request:

Separately Update category axes that are not managed by a BarSeriesManager to ensure that labels are always generated when an ItemSource is provided

@oxyplot/admins

VisualMelon · 2022-08-13T10:25:59Z

FYI @HavenDV

If you can confirm this fixes your problem then I'll get this merged soon. It's not pretty, but it's better than having all the examples and documentation broken.

HavenDV · 2022-08-15T04:51:12Z

Checking your PR, I noticed a small problem with the bindings in the ExampleBrowser.WPF:

HavenDV · 2022-08-15T05:25:26Z

I checked and can confirm that the problem does not occur after the fix.
Unfortunately, my knowledge is not enough to talk about possible side effects.
Maybe add this example(used for testing) to ExampleLibrary issues?

        [Example("#1847: Axes are not displayed")]
        public static PlotModel AxesAreNotDisplayed()
        {
            var header = new string[]
            {
                "Open","High","Low","Close","AdjClose","Volume","AdjOpen","AdjHigh","AdjLow",
                "DailyReturn","Returns5day","STD20","MA20","MA50","BollingerUpperBand","BollingerLowerBand",
                "EMA12","EMA26","MACD","MACDSignal","MACDHistogram",
                "SOpercentK","SOpercentD","RSI","WpercentR","OBV","PlusDI","MinusDI","ADX",
                "CloseMinusMA20","CloseMinusMA50","CloseMinusBollingerUpperBand","CloseMinusBollingerLowerBand","MA20MinusMA50",
            };
            var data = new double[,]
            {
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
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                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
                { 0.9999999999999999,0.997088164089882,0.9899092919706102,0.9950504296167784,0.7645231225967896,-0.131627763505179,0.7750658552923056,0.7727373978009712,0.7571001439963116,0.0035550901565916627,0.16540922477328104,-0.09465795346606005,0.7492422028081449,0.6389674761480396,0.6333079791634015,0.7738106926487941,0.7706904481437066,0.7497691120431067,0.5861933993562555,0.626883966160379,-0.0004735663481003529,0.2368424102501585,0.2881472220978641,0.260482697244276,0.23684242087601987,0.6587017585592793,0.27394454862182455,-0.1399141730630187,-0.2905596809973949,0.3184599540263398,0.5809446810018211,0.26577027747775794,0.22949809539914257,0.6128922594037838 },
            };

            return new PlotModel
            {
                Title = "Axes are not displayed",
                Axes =
                {
                    new CategoryAxis
                    {
                        Position = AxisPosition.Left,
                        TitleFontSize = 7,
                        Key = "VerticalAxis",
                        // We invert this axis, so that they look "symmetrical"
                        StartPosition = 1,
                        EndPosition = 0,
                        ItemsSource = header,
                    },
                    new CategoryAxis
                    {
                        Position = AxisPosition.Bottom,
                        TitleFontSize = 7,
                        Angle = -45,
                        Key = "HorizonatlAxis",
                        ItemsSource = header,
                    },
                    new LinearColorAxis
                    {
                        Position = AxisPosition.Top,
                        Palette = OxyPalettes.BlueWhiteRed31,
                    }
                },
                Series =
                {   
                    new HeatMapSeries
                    {
                        X0 = 0,
                        X1 = data.GetLength(1) - 1,
                        Y0 = 0,
                        Y1 = data.GetLength(0) - 1,
                        RenderMethod = HeatMapRenderMethod.Rectangles,
                        LabelFontSize = 0.4,
                        LabelFormatString = ".000",
                        Data = data,
                        Interpolate = false,
                    }
                }
            };
        }

Before:

After:

VisualMelon · 2022-08-15T06:11:19Z

I think the existing examples under Category Series are sufficient along with your assurance. Thank you very much for checking.

VisualMelon · 2022-08-15T06:12:02Z

I'll check about those bindings as well, thanks.

VisualMelon · 2022-08-17T06:58:57Z

@HavenDV just to check, the bindings you mentioned here were the ones fixed in the other PR?

HavenDV · 2022-08-17T09:07:58Z

Yes they have been fixed in this PR

Jonarw

Looks good to me!

VisualMelon · 2022-08-23T08:08:17Z

@Jonarw thanks for reviewing this in particular

I'm sort of holding everything while we look at #1920 ; however, if that doesn't go through soon we can merge another batch.

(Also keen to stop azure complaining, or actually work if possible)

idg10 · 2023-08-01T07:45:55Z

As far as I can tell, there are no releases available (not even preview builds) on NuGet that include this bug fix.

Will you be making a new release available any time soon? I have run into this bug. I'm working around it by adding values directly to the Labels collection, but it would be good to be able to take advantage of this fix instead.

HavenDV · 2023-08-01T07:51:42Z

I haven't used it, but maybe there is a preview version on myget according to this documentation
https://github.com/oxyplot/oxyplot#nuget-packages

VisualMelon · 2023-08-01T08:11:58Z

I think that's all broken at the moment (pending someone having time to look into #2014 ).

I'd be in favour of putting out more regular point releases so that bug fixes are available, but not sure how we should handle dropping older versions of .NET (perhaps not a big deal for the core library since it targets netstandard 2.0)

HavenDV · 2023-08-01T08:19:59Z

I would suggest just pushing preview versions automatically to NuGet after every change in the develop branch. We can use MinVer for this - https://github.com/adamralph/minver. In this case, to release stable version, we just need to add a tag with the version(like v1.1.1) for a specific commit and CI will build and push stable version.

Jonarw · 2023-08-03T06:29:49Z

I think this particular PR should be in the latest pre-release on MyGet, as CI seemed to stop pushing to MyGet around December 2022.
@HavenDV We used to push automatically to NuGet from CI, but apparently there was some sort of request from nuget to stop doing that (https://oxyplot.github.io/announcements/nuget-packages). I was not involved at the time, so I don't quite know what that was about exactly, but that's the reason we don't do that currently.
However I would definitely be in favor of putting out releases more regulary.

Edit: Sorry, misread the date, this was merged in 2023, so will not be in latest pre-release on MyGet.

HavenDV · 2023-08-03T06:35:30Z

I talked more about convenience for the end user.
MyGet involves modifying nuget.config and adding a new source there.
Release prereleases on NuGet with beta/alpha/preview prefix - for example 1.1.1-preview.5 will only be visible to users who enable the include prerelease checkbox in the IDE

Fix CategoryAxis.ItemsSource without BarSeries (oxyplot#1847)

98580f3

VisualMelon force-pushed the Issue1847 branch from ddb2c60 to 98580f3 Compare August 13, 2022 10:24

VisualMelon changed the title ~~Issue1847~~ Fix CategoryAxis.ItemSource when not associated with a BarSeries Aug 13, 2022

Jonarw approved these changes Aug 22, 2022

View reviewed changes

Merge branch 'develop' into Issue1847

19067e8

VisualMelon merged commit df75601 into oxyplot:develop May 14, 2023

VisualMelon mentioned this pull request Aug 11, 2023

Pre-Release builds are not pushed to Myget #2014

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This was referenced Dec 31, 2025

Bump Microsoft.Data.Sqlite, OxyPlot.Core and System.Drawing.Common VahidN/PdfReport.Core#112

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Bump Microsoft.Data.Sqlite, OxyPlot.Core and System.Drawing.Common VahidN/PdfReport.Core#113

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dependabot Bot mentioned this pull request Jan 6, 2026

Bump Microsoft.Data.Sqlite, OxyPlot.Core and System.Drawing.Common VahidN/PdfReport.Core#114

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This was referenced Jan 14, 2026

Bump the tests group with 4 updates VahidN/PdfReport.Core#116

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Bump the tests group with 5 updates VahidN/PdfReport.Core#117

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dependabot Bot mentioned this pull request Feb 4, 2026

Bump the tests group with 7 updates VahidN/PdfReport.Core#118

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VisualMelon commented Aug 13, 2022

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