Latest Contributions by DarrenWiens2

Sorry, Neil, but you are not the one I heard it from so it's hard to quote you. Why don't you link to these several references and you can have your day in the sun? ... View more

This code is meant to be run from a script tool with two parameters: workspace and feature class. For your purposes, you can just enter values for each parameter (sorry, the code block won't let me format it correctly, so there are some indentation issues, but substituting values for the sys.argv parameters is the take-home message). import arcpy, sys  workspace = r'C:/someworkspace'  featureclass = r'C:/somefolder/someGDB.gdb/somefeatureclass' try:    arcpy.env.workspace = workspace    fields = arcpy.ListFields(featureclass)  for fld in fields:  print fld    except:    print arcpy.GetMessages()  ... View more

Have you collected any parameters in sys.argv[]? The error indicates you have not. You can check with: print len(sys.argv) This should return 1 (which holds the name of the script) if no extra parameters have been specified. ... View more

Please see Posting Code Blocks in the New GeoNet. Posting code blocks properly is especially crucial for indentation problems. import arcpy import pythonaddins class ButtonClass1(object):     """Implementation for test_addin.button (Button)"""     def __init__(self):         self.enabled = True         self.checked = False     def onClick(self):         mxd = arcpy.mapping.MapDocument('current')       Ll=arcpy.mapping.ListLayoutElements(mxd, "TEXT_ELEMENT"):       for elm in Ll:             if elm.text="Text":                 elm.text="Text1" Your error refers to indentation of the Ll line. You can see it's not at the same indentation level as the mxd line (mxd is two spaces ahead of Ll). Make it the same. ... View more

You're asking some very wide-ranging questions, almost on par with, "what is GIS?". You're best source of information is the ESRI help (e.g. A Quick Tour of Geodatabases). A one-sentence answer is: geodatabase feature classes are like other spatial files (e.g. shapefiles), with extra functionality, like topology, networks, domains, relationships, etc. ... View more

Is this what you are describing? If so, can you provide an example of how this doesn't work for you? ​ ... View more

Have you symbolized your raster as a bi-level image? ArcScan can vectorize any raster format supported by ArcGIS so long as it is represented as a bi-level image. This requires that you symbolize raster layers with two unique colors. You can use either the ArcMap Unique Values or Classified rendering options to separate the raster into two colors. ... View more

You can't "edit" rasters, but you can turn that raster into an editable vector polygon or polyline feature class using ArcScan or raster classification/raster to polygon operation. ... View more

As Lisa touches on, your first step is to georeference your raster, if not done already. Then, your task is to turn that raster into something more usable, using ArcScan or manually tracing the lines into a polygon/polyline feature class. I've also used a supervised classification to train the data into usable classes (i.e. draw training polygons for a few known classes, then run the classification to apply those training polygons to the entire raster). ... View more

You can do your entire map fairly painlessly using the Project tool in batch processing mode. This will open a batch processing grid into which you can drag and drop the desired layers from the table of contents. edit: apparently this functionality is so popular that there is a Batch Project script tool packaged with ArcGIS (at least at 10.1). ... View more

If Hillary's suggestion does not work, try creating or re-creating the spatial index of both files (ArcCatalog->Feature Class Properties->Indexes tab). This fixes all kinds of inexplicable geometry problems. ... View more

Do the GRID and GDB raster have the same pixel depth? If not, the new raster may have truncated or scaled the original values to fit the new pixel depth, moving away from the standard flow direction codes (1, 2, 4, 8, etc.). You do mention that the data are the same, so this may not be your problem. ... View more

Oh, I completely misunderstood how you wanted to use user input. I'm going to say that it's not possible the way you've got it. I'm actually still not quite sure what you're trying to achieve - for each bore drill location, the user needs to type in the number? That could be a lot of typing... ... View more

I assume you've checked that "mergeBuffer" is what you think it is. Can't do much else than inspect your data. ... View more