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PointStyles based on data

#1

Hello all,

I’m wondering if there’s a way to style points based on metadata.

For example, I have a map that is plotting data points. The data has an associated “state” value for each point (at least in our data set). Is there a simple way to say, for example, if state is 1, the color is red. If state is 2, the color is blue and the symbol type is cross.

I can see doing this with multiple layers, and each state would have its own layer, but is it possible to do it all in one layer?

Thanks in advance,

Aaron

#2

Thanks Aaron,
Yes. You could use ClassBreakStyle. You can find the sample in our how do I sample

I attached you the main file.
LoadClusterPointStyle.xaml (422 Bytes) LoadClusterPointStyle.xaml.cs (4.7 KB)

You can also use the ValueStyle
FourColorMap.xaml.cs (3.4 KB) FourColorMap.xaml (1.3 KB)

fourColorLayer = new InMemoryFeatureLayer();
ValueStyle valueStyle = new ValueStyle { ColumnName = “Color” };
valueStyle.ValueItems.Add(new ValueItem(“1”, AreaStyle.CreateSimpleAreaStyle(GeoColors.LightGreen)));
valueStyle.ValueItems.Add(new ValueItem(“2”, AreaStyle.CreateSimpleAreaStyle(GeoColors.LightSkyBlue)));
valueStyle.ValueItems.Add(new ValueItem(“3”, AreaStyle.CreateSimpleAreaStyle(GeoColors.Yellow)));
valueStyle.ValueItems.Add(new ValueItem(“4”, AreaStyle.CreateSimpleAreaStyle(GeoColors.LightPink)));
fourColorLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(valueStyle);
fourColorLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
layerOverlay.Layers.Add(fourColorLayer);

Thanks

Frank

#3

Thanks Frank.
I had actually just been looking at the Four Color map example.

I’ll take a look at the LoadClusterPoint example as well.

#4

Hey Frank,

using the ValueStyle, is it possible to specify more than one column name?

#5

Thanks Aaron,
Yes. We do support that. You can take a look this one.

Thanks

Frank

#6

Thanks Frank. I’ll take a look.