Latest Contributions by AndrewChapkowski

Can you repost your code inside the code tag for the formatting stays with it? The icon looks like a # symbol. Thanks ... View more

First you need to download the shapefiles that you want to geocode against.  For the census data, I believe it is the tiger road data.  Then you will have to create your locater based off that information.  Finally, you can geode the list of addresses. The links Joseph Kerski provided will help you with that.  In addition, in the ArcGIS help, there are tutorials that can help you as well.  I suggest you read and try them out.  See: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/ArcGIS_tutorials/00v20000000t000000 ... View more

A good source of data would be to use the Tiger/Line Shapefiles: http://www.census.gov/geo/www/tiger/tgrshp2010/tgrshp2010.html There is a wealth of information here, and I hope it puts you on the right track. ... View more

You can try using Split Raster to break up your analysis into smaller parts instead of the mask tool. See: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00170000009v000000 ... View more

Try using None instead of NULL in your python code. See this python documentation on the null object: http://docs.python.org/release/2.5.2/lib/bltin-null-object.html ... View more

That's a good addition as well. ... View more

What version of software + service packs are you using?  Have you tried writing to a different file geodatabase? Can you post your full code? ... View more

Use makefeaturelayer_management() and use the Layer object to add the layer object to the TOC. #... other logic tempLayer = "layer" # Make a layer from the feature class arcpy.MakeFeatureLayer_management("C:/data/mexico.gdb/cities",tempLayer) addLayer = arcpy.Layer(tempLayer) arcpy.mapping.AddLayer(df, addLayer, "AUTO_ARRANGE") arcpy.RefreshTOC() ... View more

Szymon, Since I can't see your whole work flow, here is my guess: Try using arcpy.exists() and if the value it True, use results = arcpy.CreateUniqueName(r"C:\data\workspace.gdb\Result_1") or you can try using the in_memory workspace as well.  If you want to overwrite the output, make sure you set arcpy.env.overwriteOuput() on each python process because it will not inherit the environmental parameters from the parent python process. Example of multiprocessing function: import arcpy from arcpy import env def function(args):    env.overwriteOutput = True    env.scratchWorkspace = args[0]    #  other logic    #....    return results  ... View more

You can use conditional statements to check if a file exists: import os import arcpy file = r"somepath\pdf.pdf" if os.path.isfile(file): # exists - get a new name for the pdf    file = arcpy.CreateUniqueName(file) The if state basically is saying if the file exists and the os.path.isfile() returns true, then call this ArcPy function that will create a unique name for your file. Also, to set overwrite output it should be: arcpy.env.overwriteOutput = True # or 1 ... View more

Here is a sample to draw an Arc and by using the center point of the circle, you can create a pie wedge.  You are most likely going to have modify this code to fit your needs.  You can create the wedge and then use an insert cursor to put the geometry into your feature class.  I just save it to disk. import math import arcpy def toCoord(centerX,centerY, radius, angle):     """         Calculates the position on the arc     """     radians = float((angle/180) * math.pi)     x = float(centerX + math.cos(radians) * radius)     y = float(centerY + math.sin(radians) * radius)     return [x, y] def arc(centerX,centerY,radius,startAngle,endAngle,segments):     """         centerX and centerY - X,Y center points of arc segment         radius - distance from center to edge of circle in map units         startAngle - starting position as degrees         endAngle  ending position as degrees         segments - number of points to add in the Arc         returns: Array of Coordinates [[X1,X1],...,[Xn,Yn]]     """     angle = startAngle     path = []     coords = toCoord(centerX,centerY,radius, angle)     path.append(coords)     while (angle <= endAngle):         coords = toCoord(centerX,centerY,radius, angle)         path.append(coords)         angle +=float(((endAngle-startAngle)/segments))     return path centerPt = arcpy.Point(1.0,1.0) arcPts = arc(centerPt.X,centerPt.Y,5.0,10.0,50.0,10) array = arcpy.Array() array.add(centerPt) for pt in arcPts:     arcPt = arcpy.Point(pt[0],pt[1])     array.add(arcPt) array.add(centerPt) geom = arcpy.Polygon(array) arcpy.CopyFeatures_management(geom,r"c:\temp\testArc.shp") In addition to that, you might want to improve your error handling: # Change this arcpy.AddMessage("\n** Error **\n") # To at least this: arcpy.AddError(arcpy.GetMessages(2)) You might want to also consider adding a trace function to your except that will point out exactly what line is failing.  See: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//002z0000000q000000 Hope this helps. ... View more

The data driven pages object has a property called currentPageID. This will allow you to you just print one page out of multiple pages for the data driven page series.  You can find more information here: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00s300000030000000 Here is an example: import arcpy from arcpy import mapping from arcpy import env import os mxdPath = arcpy.GetParameterAsText(0)  # ex: r"c:\temp\ddpMap.mxd" pageNum = arcpy.GetParameter(1)  # ex: 25 mxd = mapping.MapDocument(mxdPath) ddp = mxd.dataDrivenPages ddp.currentPageID = int(pageNum) # here you would pass 25;  casting to int() just to be safe mapping.ExportToPDF(mxd, r"C:\test\mappage_" + str(pageNum) + ".pdf") del mxd del ddp If you want to use the data driven page object to export maps, you can also do that as well.  #.... other logic # ddp = mxd.dataDrivenPages ddp.currentPageID = int(pageNum) ddp.exportToPDF(r"c:\temp\mypage.pdf",page_range_type="CURRENT",multiple_files="PDF_SINGLE_FILE") #... other code # Let me know how this works out.  Hope it helps! Enjoy ... View more

I noticed you have this arcpy.env.overwriteOutput - True but it should be arcpy.env.overwriteOutput = True In addition, you can try doing the following: cities = str(arcpy.env.workspace) + os.sep + "Larimer_Cities.shp" Does the data exist at the workspace path specified?  If I do for example this: import arcpy arcpy.env.workspace = r"pathto\scratch.gdb" desc = arcpy.Describe("FeatureClassName") print desc.name I get the feature class's name. You can also test your code by using the arcpy.Exists(): arcpy.env.workspace = "mypath" cities = "Larimer_Cities.shp" print arcpy.Exists(cities) ... View more

You can write all your functions in a simple python script to do what your doing. But if you want to use subprocessing, here is how you can use it: def spawn_function(pythonExe, # exe of python                   workerScript, # script that does the work (path to .py file)                   inFC,# source feature class 1st variable in script                   scratchWrksp, # scratch workspace 2nd variable in script, etc...                   count # Thread ID number defined by user                   ):         p = subprocess.Popen([pythonExe,                               workerScript,                               str(inFC),                               str(scratchWrksp),                               str(count)                               ],\                                cwd=os.path.dirname(scratchWrksp),\                                shell=False,\                                stdout=subprocess.PIPE,\                                stderr=subprocess.PIPE)         return p Now you have a function that will return an instance of your subprocess.  In the __main__ you call the subprocessing in a loop of some other fashion based on some requirement like number of CPUs. if __name__ == "__main__":    pList = []    processCount = (int(os.environ["NUMBER_OF_PROCESSORS"]) - 1) # to account for main thread    pythonExe = os.path.join(sys.exec_prefix,'python.exe')    for r in range(0,processCount):       pList.append(spawn_function(ALL THE VARIABLES))     # then you have to check if the process completed I didn't test the code, but it will give you a general idea on how this works. You can also look at multiprocessing as well.  Enjoy ... View more