Latest Contributions by XanderBakker

Hi Gina, ArcGIS has no problems with underscores in the output field name. If you use DIST_BUFF instead of BUFF_DIST it simply works.BUFF_DIST is the default name assigned in the normal buffer tool  (not multi-ring). The Help of the normal Buffer tool states: The output feature class will have a field, BUFF_DIST, that contains the buffer distance used to buffer each feature, in the linear unit of the input features' coordinate system. If a field named BUFF_DIST exists in the input, it's values will be overwritten in the output. The BUFF_DIST is sort of a system field in the buffer process (although it shouldn't be for the multi-ring tool). It get's even nicer if your input features have a field called "BUFF_DIST". This field will be removed from the output when doing a multi-ring buffer... I guess there is room for enhancement here... Kind regards, Xander ... View more

Hi Stefan, After we had contact through mail I send you a complete shapefile of the 46+K features. For those of you that may have a similar question I'll include an explanation of the steps that I followed. What I did was: Through REST a query for all the ID's of the hydrants Access the list of ObjectIDs Sort this list of ObjectIDs Create chunks with less than 1000 elements For each chunk (list of sorted ID's), determine the min and max Query the service for ID's in the range of each min and max. Now at home, where I don't have an eval proxy to fight against, the code posted earlier seems to work after I added the "NO_TEST" parameter to the append tool (the schema of the featureset was not the same as the shapefile, since long field names are truncated in shapefile/DBF format) So the advice is, simply write to a fgdb featureclass... Kind regards, Xander ... View more

You are trying to create a text file in this location: "C:/GIS/Track1/1_Orig/Track1.gdb/Tracklines/" This is a dataset within your file geodatabase and that won't work. The other thing is you trying to create a shapefile inside you file geodatabase, which won't work either. It would be better to define the "outTrackFile" and "outTrackPolylineFeatures" as follows: outTrackFile = os.path.join(folder, "xy_{0}.txt".format(id)) outTrackPolylineFeatures = os.path.join(ws, ds_name, "xy_{0}".format(id)) This will require defining another variable called folder that points to an existing folder where the text file should be created. I haven't looked closer to your code and obviously haven't tested it, but the code below might work for you: import arcpy, os from arcpy import env from arcpy.sa import * # Set local variables folder = r"C:\GIS\Track1\1_Orig" ws = r"C:\GIS\Track1\1_Orig\Track1.gdb" ds_name = "Tracklines" inDirectionRaster = "ragw_dir2" inMagnitudeRaster = "ragw_mag2" stepLength = 10 trackingTime = 10000000 csv_file = r"C:\2_UWaterloo\10_ArcGIS\GWtoolset\LandBlocks\RA\input\SourcePts10.csv" env.workspace = ws # Check out the ArcGIS Spatial Analyst extension license arcpy.CheckOutExtension("Spatial") i = 0 try:     with open(csv_file ,'r') as infile:         for line in infile:             i += 1             if i != 1:                 x = line.split(',')[0]                 y = line.split(',')[1]                 id = line.split(',')[2]                 sourcePoint = arcpy.Point(float(x),float(y))                 outTrackFile = os.path.join(folder, "xy_{0}.txt".format(id))                 outTrackPolylineFeatures = os.path.join(ws, ds_name, "xy_{0}".format(id))                 # Execute ParticleTrack                 ParticleTrack(inDirectionRaster, inMagnitudeRaster, sourcePoint,                               outTrackFile, stepLength, trackingTime, outTrackPolylineFeatures)     arcpy.CheckInExtension("Spatial") except:     print arcpy.GetMessages(2) ... View more