Latest Contributions by martinaraffellini

Hello, I have a shapefile with fields: x y z u v V where the first 3 fields are point coordinates, u and v velocity in x and y direction, V velocity magnitude. I want to show the velocity vector field. So i converted fields u and v to raster (feature to raster tool), then changed symbology. The direction is correct, but i cannot see magnitude. So i added to the shapefile another field, angle: atan(v/u), with the velocity direction. I converted this field to raster (direction), as well as field V (magnitude). I applied the symbology to the raster magnitude as in the picture and the size changes but they all point to the same direction. What could be the problem? I also tried to change field type of angle in the shapefile to direction. Thank you ... View more

Hello! I am trying to update the symbology of a raste layer using an existing layer file with 2 different functions:  - update layer - apply symbology from layer The same function works with shapefiles, though. Nothing happens, still the code runs till the end with no error message, which makes it pretty difficult to find the error. import arcpy arcpy.env.overwriteOutput = True workDir = 'C:/0.STUDY PROJECT/Maps/' mxd = arcpy.mapping.MapDocument(template) dfs = arcpy.mapping.ListDataFrames(mxd) df = dfs[0] # clip is obtained interpolating a point shapefile with natural neighbours method and clipped with a polygon shapefile clip = "C:\\0.STUDY PROJECT\\MapsKulmbach\\processed_data\\clip" depth_data = arcpy.mapping.Layer(clip) arcpy.mapping.AddLayer(df, depth_data) srcLay = workDir + "depthSymbology.lyr" srcLayObj = arcpy.mapping.Layer(srcLay) # try function 1 arcpy.mapping.UpdateLayer(df, depth_data, srcLayObj, True) # try function 2 arcpy.ApplySymbologyFromLayer_management (depth_data, srcLayObj) mxd.save() arcpy.RefreshActiveView()‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Do you know what a reason could be? Thank you ... View more

Hello! I am trying to update the symbology of a raste layer using an existing layer file with 2 different functions:  - update layer - apply symbology from layer The same function works with shapefiles, though. Nothing happens, still the code runs till the end with no error message, which makes it pretty difficult to find the error. data = arcpy.mapping.Layer(raster)             # raster path defined above arcpy.mapping.AddLayer(df, depth_data)    # data frame defined above srcLay = workDir + "Symbology.lyr"    # working directory defined above srcLayObj = arcpy.mapping.Layer(srcLay) # this function: arcpy.mapping.UpdateLayer(df, data, srcLayObj, True) #  or alternatively: # arcpy.ApplySymbologyFromLayer_management (data, srcLayObj)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Do you know what a reason could be? Thank you ... View more

Hello! the following commands works with shapefiles and rasters, but i cannot manage with a TIN. Do you know the reason? tin = C:\PROJECT\mytin arcpy.CreateTin_3d(tin, CoordSys, Input_Features)  # coord sys and input defined above mylayer = arcpy.mapping.Layer('{0}'.format(tin))‍‍‍‍‍ I get an error: invalid data source. So i tried to save the TIN as a .lyr files first with arcpy.SaveToLayerFile_management(tin), but i get the same error. With rasters and shapefiles i just give in input the full path of the file, but about the tin? Thank you! ... View more