Develop Reference

Cannot load model using WinML

As WinML is still fairly new and ever changing, I was hoping to know if anyone else has come across this error when trying to load a ONNX file made via the Custom Vision Service Export.
Type Error: Type (map(string,tensor(float))) of output arg (loss) of node (ZipMap) does not match expected type (seq(map(string,tensor(float))))
using Windows.AI.MachineLearning;
Windows RS5 1809 (build 17763.1)
UWP SDK 17763
Testing code from this link:
https://learn.microsoft.com/en-us/uwp/api/windows.ai.machinelearning
// Load and create the model
var modelFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri($"ms-appx:///{_modelFileName}"));
_model = await LearningModel.LoadFromStorageFileAsync(modelFile);
Any help would be greatly appreciated.

Windows build 17763 (RS5) requires ONNX version 1.2 when Windows.AI.MachineLearning.
The Azure Custom Vision service supports this today .
Here is a post around a sample app that does this.
As a note, you need to make sure your output data type matches when you bind. In c# this looks something like this:
public sealed class ModelOutput
{
public TensorString ClassLabel = TensorString.Create(new long[] { 1, 1 });
public IList<IDictionary<string, float>> Loss = new List<IDictionary<string, float>>();
}

I received info from a Microsoft associate that stated that the windows.ai.machinelearning api only supports ONNX 2. He didn't supply a date to which we can expect the custom vision service to export version 2 files.

Issues loading different shapefiles in given sharpmap tutorial code

I am currently working on sharpmap project with the need to work on offline maps. As i am fresher in this field,I am following the sharpmap tutorial and facing a problem with loading new shape files in the given tutorial code.
For Example :\
SharpMap.Layers.VectorLayer("States");
vlay.DataSource = new SharpMap.Data.Providers.ShapeFile("path_to_data\\states_ugl.shp", true);
At this line of code, if i pass a different shapefile, code builds with a blank background or no display.
I have tried with different shape files with different sizes but the result is the same. It only works for the mentioned states_ugl.shp file given in the code. Please need help regarding this issue as I am a fresher in this field.
Thanks.

Try giving layer styling for your layer, something like below.
layer.DataSource = DBlayer;
layer.Style.Fill = new SolidBrush(Color.Transparent);
layer.Style.Outline = new Pen(Color.Black);
layer.Style.EnableOutline = true;
layer.MaxVisible = 13000;

GMAP use the google satellite layer

I used in my Windows application(C#) GMAP API, I need to show the terrine feature of the map hence, I try to asssign the provider of the map as follow:
Map.MapProvider = GMapProviders.GoogleSatelliteMap;
unfortunately, the map didn't appear and show error as following:
How to get satellite view in C#??

check if you are in :
this is offline mode, it results to that if there are no caches.
GMap.NET.GMaps.Instance.Mode = GMap.NET.AccessMode.CacheOnly;
if your map's zoom property is in 0, it will result to that. do this.
MainMap.Zoom=5; //country level zoom
EDIT: another thing, this is the code to view in satellite map.
MainMap.MapProvider = GMap.NET.MapProviders.GoogleMapProvider.Instance;

Try Newer Greatmap Release in Map

You should download the lastest version of GMap.Net from here:
https://www.nuget.org/packages/GMap.NET.Presentation/

C# code completion with NRefactory 5

I just found out about NRefactory 5 and I would guess, that it is the most suitable solution for my current problem. At the moment I'm developing a little C# scripting application for which I would like to provide code completion. Until recently I've done this using the "Roslyn" project from Microsoft. But as the latest update of this project requires .Net Framework 4.5 I can't use this any more as I would like the app to run under Win XP as well. So I have to switch to another technology here.
My problem is not the compilation stuff. This can be done, with some more effort, by .Net CodeDomProvider as well. The problem ist the code completion stuff. As far as I know, NRefactory 5 provides everything that is required to provide code completion (parser, type system etc.) but I just can't figure out how to use it. I took a look at SharpDevelop source code but they don't use NRefactory 5 for code completion there, they only use it as decompiler. As I couldn't find an example on how to use it for code completion in the net as well I thought that I might find some help here.
The situation is as follows. I have one single file containing the script code. Actually it is not even a file but a string which I get from the editor control (by the way: I'm using AvalonEdit for this. Great editor!) and some assemblies that needs to get referenced. So, no solution files, no project files etc. just one string of source code and the assemblies.
I've taken a look at the Demo that comes with NRefactory 5 and the article on code project and got up with something like this:
var unresolvedTypeSystem = syntaxTree.ToTypeSystem();
IProjectContent pc = new CSharpProjectContent();
// Add parsed files to the type system
pc = pc.AddOrUpdateFiles(unresolvedTypeSystem);
// Add referenced assemblies:
pc = pc.AddAssemblyReferences(new CecilLoader().LoadAssemblyFile(
System.Reflection.Assembly.GetAssembly(typeof(Object)).Location));
My problem is that I have no clue on how to go on. I'm not even sure if it is the right approach to accomplish my goal. How to use the CSharpCompletionEngine? What else is required? etc. You see there are many things that are very unclear at the moment and I hope you can bring some light into this.
Thank you all very much in advance!

I've just compiled and example project that does C# code completion with AvalonEdit and NRefactory.
It can be found on Github here.

Take a look at method ICSharpCode.NRefactory.CSharp.CodeCompletion.CreateEngine. You need to create an instance of CSharpCompletionEngine and pass in the correct document and the resolvers. I managed to get it working for CTRL+Space compltition scenario. However I am having troubles with references to types that are in other namespaces. It looks like CSharpTypeResolveContext does not take into account the using namespace statements - If I resolve the references with CSharpAstResolver, they are resolved OK, but I am unable to correctly use this resolver in code completition scenario...
UPDATE #1:
I've just managed to get the working by obtaining resolver from unresolved fail.
Here is the snippet:
var mb = new DefaultCompletionContextProvider(doc, unresolvedFile);
var resolver3 = unresolvedFile.GetResolver(cmp, loc); // get the resolver from unresolvedFile
var engine = new CSharpCompletionEngine(doc, mb, new CodeCompletionBugTests.TestFactory(resolver3), pctx, resolver3.CurrentTypeResolveContext );
Update #2:
Here is the complete method. It references classes from unit test projects, sou you would need to reference/copy them into your project:
public static IEnumerable<ICompletionData> DoCodeComplete(string editorText, int offset) // not the best way to put in the whole string every time
{
var doc = new ReadOnlyDocument(editorText);
var location = doc.GetLocation(offset);
string parsedText = editorText; // TODO: Why there are different values in test cases?
var syntaxTree = new CSharpParser().Parse(parsedText, "program.cs");
syntaxTree.Freeze();
var unresolvedFile = syntaxTree.ToTypeSystem();
var mb = new DefaultCompletionContextProvider(doc, unresolvedFile);
IProjectContent pctx = new CSharpProjectContent();
var refs = new List<IUnresolvedAssembly> { mscorlib.Value, systemCore.Value, systemAssembly.Value};
pctx = pctx.AddAssemblyReferences(refs);
pctx = pctx.AddOrUpdateFiles(unresolvedFile);
var cmp = pctx.CreateCompilation();
var resolver3 = unresolvedFile.GetResolver(cmp, location);
var engine = new CSharpCompletionEngine(doc, mb, new CodeCompletionBugTests.TestFactory(resolver3), pctx, resolver3.CurrentTypeResolveContext );
engine.EolMarker = Environment.NewLine;
engine.FormattingPolicy = FormattingOptionsFactory.CreateMono();
var data = engine.GetCompletionData(offset, controlSpace: false);
return data;
}
}
Hope it helps,
Matra

NRefactory 5 is being used in SharpDevelop 5. The source code for SharpDevelop 5 is currently available in the newNR branch on github. I would take a look at the CSharpCompletionBinding class which has code to display a completion list window using information from NRefactory's CSharpCompletionEngine.

IronPython and Nodebox in C#

My plan:
I'm trying to setup my C# project to communicate with Nodebox to call a certain function which populates a graph and draws it in a new window.
Current situation: [fixed... see Update2]
I have already included all python-modules needed, but im still getting a
Library 'GL' not found
it seems that the pyglet module needs a reference to GL/gl.h, but can't find it due to IronPython behaviour.
Requirement:
The project needs to stay as small as possible without installing new packages. Thats why i have copied all my modules into the project-folder and would like to keep it that or a similar way.
My question:
Is there a certain workaround for my problem or a fix for the library-folder missmatch.
Have read some articles about Tao-Opengl and OpenTK but can't find a good solution.
Update1:
Updated my sourcecode with a small pyglet window-rendering example. Problem is in pyglet and referenced c-Objects. How do i include them in my c# project to be called? No idea so far... experimenting alittle now. Keeping you updated.
SampleCode C#:
ScriptRuntimeSetup setup = Python.CreateRuntimeSetup(null);
ScriptRuntime runtime = new ScriptRuntime(setup);
ScriptEngine engine = Python.GetEngine(runtime);
ScriptSource source = engine.CreateScriptSourceFromFile("test.py");
ScriptScope scope = engine.CreateScope();
source.Execute(scope);
SampleCode Python (test.py):
from nodebox.graphics import *
from nodebox.graphics.physics import Vector, Boid, Flock, Obstacle
flock = Flock(50, x=-50, y=-50, width=700, height=400)
flock.sight(80)
def draw(canvas):
canvas.clear()
flock.update(separation=0.4, cohesion=0.6, alignment=0.1, teleport=True)
for boid in flock:
push()
translate(boid.x, boid.y)
scale(0.5 + boid.depth)
rotate(boid.heading)
arrow(0, 0, 15)
pop()
canvas.size = 600, 300
def main(canvas):
canvas.run(draw)
Update2:
Line 139 [pyglet/lib.py] sys.platform is not win32... there was the error. Fixed it by just using the line:
from pyglet.gl.lib_wgl import link_GL, link_GLU, link_WGL
Now the following Error:
'module' object has no attribute '_getframe'
Kind of a pain to fix it. Updating with results...
Update3:
Fixed by adding following line right after first line in C#-Code:
setup.Options["Frames"] = true;
Current Problem:
No module named unicodedata, but in Python26/DLLs is only a *.pyd file`. So.. how do i implement it now?!
Update4:
Fixed by surfing: link text and adding unicodedata.py and '.pyd to C# Projectfolder.
Current Problem:
'libGL.so not found'... guys.. im almost giving up on nodebox for C#.. to be continued
Update5:
i gave up :/ workaround: c# communicating with nodebox over xml and filesystemwatchers. Not optimal, but case solved.

-X:Frames enables the frames option as runtime (it slows code down a little to have access to the Python frames all the time).
To enable frames when hosting you just need to do:
ScriptRuntimeSetup setup = Python.CreateRuntimeSetup(new Dictionary<string, object>() {
{ "Frames", true }
});
Instead of the null that you're passing now. That's just creating a new dictionary for the options dictionary w/ the contents "Frames" set to true. You can set other options in there as well and in general the -X:Name option is the same here as it is for the command line.