Latest Contributions by DarrenWiens2

I believe you need to use a cursor to pass the values one at a time. To read fields values, use SearchCursor. To write values, use UpdateCursor or InsertCursor. Make sure you take advantage of the sorting capabilities, especially for your ranking question. PS - there's a forum specifically for Python, where you'll probably get your questions answered faster. ... View more

If you are asking how to make random points inside a polygon, I suggest downloading and using the Geospatial Modelling Environment (formerly called Hawth's Tools). It has the ability to generate random points inside a polygon. ... View more

But you have an input feature layer (the end points of your polylines). If you don't have that, use the Line to Point script (not exactly sure what it's called - my ArcGIS is in the process of crashing) to get the end points. That gives you your input feature class, on which you use Near to get the ID and distance to the closest junction. Edit: it's the Feature Vertices to Points tool, Point Type = BOTH_ENDS ... View more

It's not ideal, but as a quick fix you could make 2 copies of the layer, label one with a callout balloon with very small margins, and put another label with a circle background on top. I don't know if this would work with a lot of conflicting labels (ie. would both labels rotate the same?). ... View more

Before snapping, you could run the Near tool on the points to get the distance to the nearest line. ... View more

This code finds all unique IDs in a feature class, and sticks them into a new table. import arcpy input = "H:/GIS_Data/TEMP_GDB.gdb/feattoline" # feature class to iterate gdb = "H:/GIS_Data/TEMP_GDB.gdb" #gdb or folder for your new table table = "JunkTable" tabpath = gdb + "/" + table arcpy.CreateTable_management(gdb,table) arcpy.AddField_management(tabpath,"ID","TEXT") rows = arcpy.SearchCursor(input) ids = [] for row in rows:     if row.FID_polyfc not in ids:         ids.append(row.FID_polyfc) insrows = arcpy.InsertCursor(tabpath) for id in ids:     insrow = insrows.newRow()     insrow.ID = id     insrows.insertRow(insrow) del row del rows del insrow del insrows PS - this is largely a community forum (ie. users answer questions on their own time), so don't be bitter if your question goes unanswered. Especially if it's not in the correct forum - this should be in 'Geoprocessing'. ... View more

Not sure what your question is - this sounds exactly like what Near is supposed to do. ... View more

Sounds like something you'd want to automate using ArcObjects. ... View more

Here's a standalone script that should do what you want (just change the path to your feature class): import arcpy input = "H:/GIS_Data/TEMP_GDB.gdb/feattoline" # your feature class fields = "OID A; Type A" # sort by OID, ascending, then Type, ascending rows = arcpy.UpdateCursor(input,"","","",fields) count = 0 for row in rows:     if count == 0:         curType = row.Type     count = count + 1     if row.Type != curType:         curType = row.Type         count = 1     row.Type_Num = count     rows.updateRow(row) del row del rows ... View more

There's probably a one-liner function out there that tells you the last number in a list of numbers, but this works: import arcpy input = "H:/GIS_Data/TEMP_GDB.gdb/feattoline" # your feature class field = "OBJECTID A" # the name of the field, sorted ascending rows = arcpy.SearchCursor(input,"","","",field) for row in rows:     number = row.OBJECTID This code simply sorts the values in the field "OBJECTID," assigns and overwrites that value to the variable "number" for each increasing value. Finally, you're left with the largest value of "OBJECTID." Then, make pStart = number. ... View more

I usually use the approach of sorting by values, then comparing the previous value to the current value: rows = arcpy.UpdateCursor("Junk1.dbf","","","","ID A") # sort by ID, ascending order         #Create an empty list     myList = []           i = 0     for row in rows:         if i = 0: #first time around             value = row.ID             myList.append(value)         i += 1         if row.ID != value: #if a new ID             value = row.ID             myList.append(value)             i = 1         row.TEST = i         rows.updateRow(row)    ... View more

This started off as being elegant... # Import arcpy module import arcpy # Parameters input = "C:\\some feature class"           #input feature class near = "C:\\some other feature class"    #near feature class nearcount = "3"                                 #number of nearest features output = "C:\\output table"                  #output table # Fun stuff # Process: Generate Near Table arcpy.GenerateNearTable_analysis(input, near, output, "", "NO_LOCATION", "NO_ANGLE", "ALL", nearcount) # Process: Add Field arcpy.AddField_management(output, "rank", "SHORT", "", "", "", "", "NON_NULLABLE", "NON_REQUIRED", "") rows = arcpy.UpdateCursor(output,"","","","IN_FID A; NEAR_DIST A") count = 0 for row in rows:     if count == 0:         curID = row.IN_FID     count = count + 1     if row.IN_FID != curID:         curID = row.IN_FID         count = 1     row.RANK = count     rows.updateRow(row) del row del rows ... View more

I haven't tested this out, but the Raster Calculator help says the syntax is RasterCalculator(...) not RasterCalculator_sa (which is tricky - bad ESRI). ... View more

Cool. Change it to: end = datetime.today() ...or possibly datetime.datetime.today() ... View more