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New Post: Example C# code displaying ArcGIS Server WebService layers

December 22, 2014, 5:07 am
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I'm developing in Visual Studio 2013 C# .Net 4.5.

Is there a simple example of how to connect to ArcGIS Server Feature and Image services. We have complete control of the server and services.

Also how to connect to some of the common base maps.

Most of the samples I've seen reference dlls that don't come with the DotSpatial 1.7 download. For example Brutile... When I try to download and build the brutile solutions other dlls are missing.

Where can I find these pre-built dlls?

Why are there no example projects that include the dlls?
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New Post: Example C# code displaying ArcGIS Server WebService layers

December 22, 2014, 11:16 am
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Dotspatial.Plugins.Webmap should contain Brutile dlls.
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New Post: Applying queries on large shape files

December 23, 2014, 7:26 am
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Hello All,

Whenever I try to apply exclude queries on a large shape files (i.e., shape files with more than 50,000 features I get a OutOfMemoryException. I tried the same thing with DemoMap.exe and I got the same error.

All I do is, using the layer properties window, I exclude some of the features from the quantitative categorization. I think running the query causes the out of memory exception.

I don't know how to solve this.
Not sure if it helps, I copied part of the error message.

I would appreciate any suggestion.

ER


************** Exception Text **************
System.OutOfMemoryException: Array dimensions exceeded supported range.
at System.Collections.Generic.List1.set_Capacity(Int32 value)
at System.Collections.Generic.List1.Add(T item)
at DotSpatial.Symbology.FeatureScheme.GetValues(DataTable table) in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology\FeatureScheme.cs:line 504
at DotSpatial.Symbology.FeatureScheme.CreateCategories(DataTable table) in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology\FeatureScheme.cs:line 279
at DotSpatial.Symbology.Forms.FeatureCategoryControl.RefreshValues() in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology.Forms\FeatureCategoryControl.cs:line 713
at DotSpatial.Symbology.Forms.FeatureCategoryControl.ApplyExcludeExpression(String expression) in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology.Forms\FeatureCategoryControl.cs:line 1653
at DotSpatial.Symbology.Forms.FeatureCategoryControl.ExpressionDialogChangesApplied(Object sender, EventArgs e) in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology.Forms\FeatureCategoryControl.cs:line 1644
at DotSpatial.Symbology.Forms.SQLExpressionDialog.OnApplyChanges() in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology.Forms\SQLExpressionDialog.cs:line 198
at DotSpatial.Symbology.Forms.SQLExpressionDialog.btnApply_Click(Object sender, EventArgs e) in d:\Copyright\System Curve Generator\Vector Display\dotspatial-75229\Trunk\DotSpatial.Symbology.Forms\SQLExpressionDialog.cs:line 175
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.18444 built by: FX451RTMGDR

CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll

DemoMap
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DemoMap.exe

System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.18408 built by: FX451RTMGREL

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.18408 built by: FX451RTMGREL

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

System
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.34238 built by: FX452RTMGDR

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll

DotSpatial.Controls
Assembly Version: 1.7.0.0
Win32 Version: 1.7.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DotSpatial.Controls.DLL

System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.18408 built by: FX451RTMGREL

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.34234 built by: FX452RTMGDR

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll

DotSpatial.Symbology
Assembly Version: 1.7.0.0
Win32 Version: 1.7.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DotSpatial.Symbology.DLL

DotSpatial.Data
Assembly Version: 1.7.0.0
Win32 Version: 1.7.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DotSpatial.Data.DLL

DotSpatial.Extensions
Assembly Version: 1.7.0.0
Win32 Version: 1.7.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DotSpatial.Extensions.DLL

System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.18408 built by: FX451RTMGREL

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll

DotSpatial.Topology
Assembly Version: 1.7.0.0
Win32 Version: 1.7.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DotSpatial.Topology.DLL

Microsoft.GeneratedCode
Assembly Version: 1.0.0.0
Win32 Version: 4.0.30319.34234 built by: FX452RTMGDR

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll

System.ComponentModel.Composition
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.18408

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.ComponentModel.Composition/v4.0_4.0.0.0__b77a5c561934e089/System.ComponentModel.Composition.dll

DotSpatial.Mono
Assembly Version: 1.7.0.0
Win32 Version: 1.7.0.0

CodeBase: file:///D:/Copyright/System%20Curve%20Generator/Vector%20Display/dotspatial-75229/Trunk/bin/Debug/DotSpatial.Mono.DLL

Anonymously Hosted DynamicMethods Assembly
Assembly Version: 0.0.0.0
Win32 Version: 4.0.30319.18444 built by: FX451RTMGDR

CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_64/mscorlib/v4.0_4.0.0.0__b77a5c561934e089/mscorlib.dll

DotSpatial.Plugins.About
Assembly Version: 1.0.1185.0
Win32 Version: 1.0.1185

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.ABOUT/DOTSPATIAL.PLUGINS.ABOUT.DLL

DotSpatial.Plugins.Contourer
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.CONTOURER/DOTSPATIAL.PLUGINS.CONTOURER.DLL

GeoAPI
Assembly Version: 1.7.1.0
Win32 Version: 1.7.1.0

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.CONTOURER/GEOAPI.DLL

NetTopologySuite
Assembly Version: 1.13.1.0
Win32 Version: 1.13.1

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.CONTOURER/NETTOPOLOGYSUITE.DLL

PowerCollections
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.CONTOURER/POWERCOLLECTIONS.DLL

TomControls
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.CONTOURER/TOMCONTROLS.DLL

DotSpatial.Plugins.FindFeature
Assembly Version: 1.0.1185.0
Win32 Version: 1.0.1185

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.FINDFEATURE/DOTSPATIAL.PLUGINS.FINDFEATURE.DLL

DotSpatial.Plugins.Help
Assembly Version: 1.0.1185.0
Win32 Version: 1.0.1185

CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.HELP/DOTSPATIAL.PLUGINS.HELP.DLL

DotSpatial.Plugins.Measure
Assembly Version: 1.0.1185.0
Win32 Version: 1.0.1185
CodeBase: file:///D:/COPYRIGHT/SYSTEM%20CURVE%20GENERATOR/VECTOR%20DISPLAY/DOTSPATIAL-75229/TRUNK/BIN/DEBUG/PLUGINS/DOTSPATIAL.PLUGINS.MEASURE/DOTSPATIAL.PLUGINS.MEASURE.DLL
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New Post: Applying queries on large shape files

December 23, 2014, 7:40 am
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Just want to add that the same query work to select from attribute table!
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New Post: Licensing

December 23, 2014, 7:55 am
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I read through several documents and watched couple of Youtubes and I think the answer is that with lesser GNU license which is applied to DotSpatial I am allowed to use the library for commercial software development without exposing my own codes.
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New Post: LineSymbology Sample

December 27, 2014, 12:01 am
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Hi,I have a line layer that I want to set its symbology to sth like river,(Blue color )..I don't know how to set its symbology be code..Can you please give me some hints how to do that?
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New Post: LineSymbology Sample

December 27, 2014, 12:41 am
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Finally I found the solution


LineSymbolizer roadsymbology = new LineSymbolizer();
                          roadsymbology.SetFillColor(Color.Brown);
                          roadsymbology.SetOutline(Color.BurlyWood, 0.5);
                          Roadlay.Symbolizer = roadsymbology;
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New Post: PolygonSymbolizer with Image

January 2, 2015, 6:18 am
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Hi

Can You please send me the code to displaying the image as a pattern(like tiled) in side a polygon .


when i am using the following code its working fine

PolygonSymbolizer ps = new PolygonSymbolizer(System.Drawing.Color.White, System.Drawing.Color.Black, 30, GradientType.Rectangular, System.Drawing.Color.Black, 6);

the moment i am changing the code as follows
PolygonSymbolizer ps = new PolygonSymbolizer(newImage, WrapMode.Tile, 90);

its throwing error : " object reference is not set to an instance of object".
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Commented Unassigned: WebMercator (EPSG:3857) Projection accuracy [25176]

January 5, 2015, 8:40 am
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As I discovered using FObermaier's implementation of BrutileLayer with OSM MapNik, the accuracy of the projection needs improvement, and i cannot achieve this using a proj4 definition string:

If you use either the Authoritycode EPSG:3857 to create a projection, or the predefined KnownCoordinateSystems.Projected.World.WebMercator projection with OSM Mapnik, this projection is shifted about 100m Southwest.

Looking at the source code of the WebMap plugin in DotSpatial 1.6, i noticed that in many places the projection was converted to ToEsriString before passing it on to MapFrame, and this somehow solved the problem, a bit strange...

Finally I found in the ToEsriString() code a statement which adds a fix resetting the datum to WGS1984 so this is what did it. Now to get an accurate WebMercator projection you need to use this:

var projection = KnownCoordinateSystems.Projected.World.WebMercator;
projection.GeographicInfo.Datum = KnownCoordinateSystems.Geographic.World.WGS1984.GeographicInfo.Datum;

What bothers me most is that this appearantly cannot be achieved with any Proj4 format projection string I could find or tried to construct myself, even though this code was based on a port of proj4 at some point in time ;-)

more information:

https://trac.osgeo.org/gdal/ticket/3962

http://forums.esri.com/Thread.asp?c=93&f=984&t=288073

Sorry i do not have a Unit test ready to demonstrate this, but if you are having issues with WebMercator, i would recommend trying the above datum fix ?
Comments: ** Comment from web user: Marc_Olie **

Hello,

I had the same problem, and the reason why the transformation is not correct is that the datumtransform is never applied. The proj4 string for web mercator doesn't contain a datum element. Because of this the _datumtype for the datum is never set (it stays datumtype.unknown). In the datumtransform function there is a check:
```
/* -------------------------------------------------------------------- */
/* We cannot do any meaningful datum transformation if either */
/* the source or destination are of an unknown datum type */
/* (ie. only a +ellps declaration, no +datum). This is new */
/* behavior for PROJ 4.6.0. */
/* -------------------------------------------------------------------- */
if (sDatum.DatumType == DatumType.Unknown ||
dDatum.DatumType == DatumType.Unknown) return;
```
The datumType from WGS1984 is set, so by explicitly taking the datum from that definition, the above check will be passed and the datumshift is calculated.

Hope this helps solving this problem. I guess the easiest (but dirty) way would be to change the webmercator definition in the knowCoordinatesystems...

BTW I use the solution in my code and it works perfectly, so thanks!

Marc

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New Post: Update PolygonShapeFile manualy

January 6, 2015, 5:34 am
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Hello ,
When i creating a shape file ,on creation i want to define a default Extent ,with specific coordinates,
when i doing this and then UpdateExtent() or save() method,
the extent back to you default values X[-180|180],Y[-90|90]

can someone explain how to do this right ?
thanx.
                List<Coordinate> vertices = new List<Coordinate>();

                vertices.Add(new Coordinate(34.9176563465214, 32.4394761554574, -0.002436160109937, 0));
                vertices.Add(new Coordinate(34.9176563465214, 32.4394761554574, -0.002436160109937, 0));
                vertices.Add(new Coordinate(34.9176563465214, 32.4394761554574, -0.002436160109937, 0));
                vertices.Add(new Coordinate(34.9176563465214, 32.4394761554574, -0.002436160109937, 0));
               
                Polygon geom = new Polygon(vertices);
                _FeatureSet.Extent = new Extent(geom.Envelope);
                _FeatureSet.UpdateExtent();
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Source code checked in, #75448

January 8, 2015, 8:30 am
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check drawing state index to avoid index overrun crash.
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New Post: rendering 'all-geometry' featureset (points, lines and polygons) in map control

January 10, 2015, 11:33 pm
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Is it possible to have an 'all-geometry' featurset (one that holds all geometries: points, lines and polygons) rendered into the map control?

Given that any geometry can be stored in MS SQL Server or PostGIS tables and exported to a datatable with a geography (or geometry) datatype column, it would be helpful to be able to render the features in a layer without first having to filter by geometry type ... in the same way as is done in the MSSS Spatial tab in MSSS Management Studio.
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New Post: Trunk notes, bugs, fixes

January 11, 2015, 9:30 am
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I had a chance recently to take a look at DotSpatial trunk for the first time since last summer. Here's a list of notes and mostly minor bugs and fixes that I came up with. Looking pretty good!

Thanks.
-Phil
  1. If you don't have Visual Studio installed, you can build DotSpatial.sln with MSBuild on Windows (eg, to build DemoMap.exe and plugins for testing):
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /p:TargetFrameworkSDKToolsDirectory="C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\bin\NETFX 4.0 Tools" DotSpatial.sln
    (Note property override is needed so it can find SDK's al.exe program.)
    To build DotSpatial.WebControls.sln with MSBuild on Windows:
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe DotSpatial.WebControls.sln
  2. When compiled with MSBuild, copies 20+ copies of mscorlib.dll into bin\Debug. Are these duplicates necessary? DemoMap.exe seems to work okay without it.
  3. In SplashScreenHelper.cs, asm is Null in an ASP.NET app, causing crash in next line when getting list of directories. Affects both .NET and Mono.
  4. In ASP.NET app, pops up "A IDockManager extension must be included because a UI plugin was found." error message, plus two more, when DotSpatial.Data.Rasters.GdalExtension is found. This plugin works fine in ASP.NET apps and does not have a conventional UI the way other plugins do. Need a way to eliminate these messages. Affects both .NET and Mono.
  5. DotSpatial.Data.Rasters.GdalExtension works with Mono (tested on Mac), so probably should not be in "Windows Extensions". Problem is that its GDAL libs are Windows native. Perhaps separate the GDAL native libs from the plugin. This might be useful for, say, another plugin that also needs to use GDAL.
  6. To compile GdalExtension on Mac, two changes are needed:
    • In DotSpatial.Data.Rasters.GdalExtension.csproj, comment out the PostBuildEvent, since this runs a Windows batch file.
    • In packages.config, comment out the 3 packages.
  7. One problem noted with GdalExtension on Mac is that cells with NODATA_VALUE are painted white instead of left transparent. Note this is not a problem on Mac with an ASP.NET app, only a desktop app (both MonoMac and WinForms). Perhaps a difference (Mono bug?) in how the grid is painted.
  8. Any reason why downloading such an old version of GDAL (1.9.2 from 2012)? Testing of 1.11.1 on Mac appears to work okay.
  9. Can any of the other plugins in "Windows Extensions" be moved to Plugins? Presumably even the ones with native libs could be adapted ala GdalExtension.
  10. In ASP.NET app (Windows only), crashes with error about user scope. Fix is to change "User" to "Application" in DotSpatial.Controls\Properties files Settings.settings and Settings.Designer.cs.
  11. DemoMap saves absolute path in .dspx for, eg, .jpg and .asc files. And crashes when loading .dspx if can't find path. Use relative paths like with .shp files? And fix crash.
  12. How to prevent DemoMap from adding a path TWICE to the system path. It added this to mine (twice):
    C:\TOOLS\SVN_CO\DOTSPATIAL\BIN\DEBUG\PLUGINS\DOTSPATIAL.PLUGINS.SPATIALITE
    Programs that do things like this might be considered rogue software.
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New Post: Mac branch notes and questions

January 11, 2015, 9:34 am
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I finally had a chance recently to take a look at the new Mac branch. Looks very interesting. Here's a short list of notes and questions I came up with.

Thanks.
-Phil
  1. Will Trunk and MacCompatability [sic] branch be merged at some point? If not, how to merge recent Trunk commits into Mac branch?
  2. Can only get DemoMapMac.csproj to build with Xamarin Studio if add DotSpatial assembly references manually.
  3. DemoMapMac: Use normal MainMenu.xib created with a new MonoMac project instead of manually adding menu in code.
  4. Should DemoMapMac (or similar example) be document-based the way most Mac apps are (eg, even Xcode can open multiple projects simulaneously)?
  5. Do any of the plugins other than GdalExtension work with MonoMac app? Or does each plugin's UI need to be rewritten for MonoMac? Eg, do we need a Legend control in DotSpatial.Controls.MonoMac that subclasses NSView ala the MonoMac Map control?
  6. Commit latest MonoMac.dll (Xamarin Studio's MonoMac.dll is dated Dec. 2014)?
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New Post: Black and white pixels while legend is only colors

January 11, 2015, 4:35 pm
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I have some black and white pixels in my image while the legend has only shades of green for values >0 and grey for values =0. It seems that the grid value of these black and white pixels is always 0.

I noticed that when I have a green patch, pixels west of my patch tend to be black and pixels east tend to be white which makes me think that this is some kind of shade effect.

Any ideas?

thanks
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New Comment on "ReadProj4Strings"

January 16, 2015, 8:13 am
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And this method below ? How should I read the .prj file now ? pESRIEnd.ReadEsriString(re.ReadLine())
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New Comment on "ReadESRIPrjFiles"

January 16, 2015, 8:16 am
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The method below... How should I read the .prj file now that it doesn't exist anymore? pESRIEnd.ReadEsriString(re.ReadLine())
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New Post: Reading PRJ file

January 16, 2015, 8:42 am
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I'm developing an app and I need to read shapefiles. If the shapefile is not in WGS84 I want to convert to that datum to match the code in my app.
I'm trying to read the PRJ file then, but I'm not very familiar with dot Spatial projections.

How can I Reproject the shapefile ?

I'm trying an example found here (https://dotspatial.codeplex.com/wikipage?title=ReadESRIPrjFiles) but it is outdated.

What should I use instead of this method:
Dim re As StreamReader = File.OpenText("file.prj")
pESRIEnd.ReadEsriString(re.ReadLine())
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New Post: Possible bug in feature Selection

January 16, 2015, 9:31 am
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Hi,
I have a problem when I try to select a feature on one layer in map view It disapears ,I have seen that it is in Ilayer and features exists but it is disapeared from map viewer
Have you seen such a problem in dotspatial?is there any solutions for it?
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New Post: Reproject shapefile

January 18, 2015, 2:46 pm
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I'm working in an app that needs to load shapefiles.
For that I'm loading the .PRJ file and creating a new ProjectionInfo object from that file:
Projections.ProjectionInfo.Open(prjPath)
I have here a file with the following .prj file:
GEOGCS["Puerto Rico",DATUM["D_Puerto_Rico",SPHEROID["Clarke_1866",6378206.4,294.9786982]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]

Based in what I understand the PRJ file that I have is telling me that the Spheroid is Clarke_1866, but the ProjectionInfo says that the spheroid is WGS84 after parsing the ESRI code.

The class retrieves the values from the resource Datums.xml and on that file the spheroid for Clarke_1866 is set as WGS84 as many many others.

Am I missing something ? Can somebody explain me how the Datums.xml works ?
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