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GeoTiff fails to display in MS 10

#1

Hi,

We are using MS 10 WinForms for desktop and have updated our Nuget packages to the latest production version. We occasionally come across a GeoTiff that will not display in the map. I suspect the reason my be the type of compression being used (JPEG). I have uploaded the file to the FTP site. It is located in a folder called Tiff Will Not Display. The name of the file is _bennett.zip. The file does not display at all using the GeoTiffRasterLayer and displays as a black rectangle using UnmanagedGeoTiffRasterLayer.

Thanks,

Steve

#2

Hi Steve,

Thanks to let us know that, we will look into it.

Any update I will let you know.

Regards,

Ethan

#3

Hi Steve,

I think you’re right, the format cannot be parsed by our Tiff related class, but the NativeImageRasterLayer can parse it correct and render it, you just need pass into a correct bouding box.

The code should works for your file:

        private void Form1_Load(object sender, EventArgs e)
    {
        winformsMap1.MapUnit = GeographyUnit.Meter;

        LayerOverlay layerOverlay = new LayerOverlay();

        GeoTiffRasterLayer tiffLayer = new GeoTiffRasterLayer(@"..\..\AppData\_bennett.tif");
        tiffLayer.Open();

        RectangleShape rect = tiffLayer.GetBoundingBox();
        tiffLayer.Close();

        NativeImageRasterLayer imageLayer = new NativeImageRasterLayer(@"..\..\AppData\_bennett.tif", rect);

        layerOverlay.Layers.Add(imageLayer);
        winformsMap1.Overlays.Add(layerOverlay);
                    
        winformsMap1.CurrentExtent = rect;
        winformsMap1.Refresh();
    }

Regards,

Ethan