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- About KamrulKashem
KamrulKashem
New Contributor III
since
07-04-2014
11-11-2020
17
Posts created
15
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0
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31
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My Ideas
(1 Idea Submissions)Latest Contributions by KamrulKashem
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We have various tools on our public facing web map. http://info.nottinghamcity.gov.uk/insightmapping/ - Identify addresses at a point (reverse geocoding) - Draw tools to allow users to annotate and design their own map. - Find easting and northing at a point - Measure tools
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07-24-2014
08:56 AM
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Wow, both of you have been immense help! It shows that with a little python magic anything can be achieved even with non-standard metadata elements! I will try the various methods posed on this thread and come back to you with feedback! Keep them coming, these ideas need to be out on the public domain... automating metadata is the way forward! Especially due to the fact I can link these onto our already existing automatic update models on the data.
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03-25-2013
06:53 AM
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Hi Guys, I have recently been researching the topic of python and metadata. Currently in our organisation we hold a mix of metadata elements from both FGDC and ISO, as well as a few custom elements we wanted to record such as copyright statements. We have a website that contains all the elements together in a nice form based view. We have FME (Feature Manipulation Engine) models set up to update feature classes automatically however we want to be able to also automate the metadata update. Namely being the 'Last Updated' date element in our metadata I have noticed that the arcpy.ExportMetadata_conversion tool is restricted to translating in a set format rather than exporting all elements recorded. My question to you is: Is there any way in Python to export a specific XML element from an SDE feature class, possibly export it into a temporary XML file then update the value of the element in question, then import it back into the SDE feature class? Thank you!
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03-22-2013
08:01 AM
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Hi, Try not to use the mxd.save() function. Take this out - it never seems to work for me and corrupts my outputs too. Secondly, you need to change the parameters of the ExportToJPEG arcpy.mapping.ExportToPDF(map_document=mxd,out_pdf=os.path.join(r"H://Desktop", str(X)),resolution = '600') Where X = name of what you want the outputs to be... Hope this helps.. It's quite hard to fully understand without english comments, sorry
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03-08-2013
02:33 AM
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Hi, So are you saying in on one record in the attribute table there is actually 2 records? As in a carriage return after every 2nd name? Or just in the name field? If so, I'd export table to excel, sort out the carriage returns and import back to catalog as a feature.
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03-08-2013
02:20 AM
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851
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Hmmm, i knew it was not over! It seems when i turn this into a tool for ArcGIS it gives me errors back down at the deleting rows section! I have added messages to my script to make it easier to see where it is giving me an error. Sorry about the cluttered script! Does anyone know why it is asking for 'row' to be defined in the for in loop? The script works fine outside of the toolbox with set parameters, but now when I test it with parameters, using the same ones as I did before but selecting them in the tool window instead i get errors! Here is my script updated with arcpy.AddMessage functions import arcpy
import os
arcpy.env.workspace = r"pathto.gdb"
arcpy.env.overwriteOutput = True
in_features = arcpy.GetParameterAsText(0)
near_features = arcpy.GetParameterAsText(1)
search_radius = arcpy.GetParameterAsText(2)
records_return = arcpy.GetParameterAsText(3)
out_table = r"PathtoOutTable.dbf"
arcpy.AddMessage("Processing Point Distance")
arcpy.PointDistance_analysis(in_features, near_features, out_table, search_radius)
arcpy.AddMessage("Completed Point Distance")
arcpy.env.workspace = r"pathto.gdb"
arcpy.env.overwriteOutput = True
arcpy.AddMessage("Deleting Previous Tables")
for tbl in arcpy.ListTables():
try:
print tbl
if tbl != "TestingSort":
arcpy.Delete_management(tbl)
except arcpy.ExecuteError:
arcpy.GetMessages(2)
del tbl
arcpy.AddMessage("Completed Deleting Tables")
arcpy.AddMessage("Processing Sort")
arcpy.Sort_management(out_table, "sorted_out_table", ["DISTANCE"])
arcpy.AddMessage("Completed Sorting Tables")
sorted_out_table = "sorted_out_table"
arcpy.AddMessage("Adding new field FID")
arcpy.AddField_management(sorted_out_table,"FID","DOUBLE","","","","","","","")
arcpy.AddMessage("Completed New Field FID")
arcpy.AddMessage("Calculating FID")
arcpy.CalculateField_management(sorted_out_table, "FID", "autoIncrement()", "PYTHON_9.3", "rec=0\\ndef autoIncrement():\\n global rec\\n pStart = 1 #adjust start value, if req'd \\n pInterval = 1 #adjust interval value, if req'd\\n if (rec == 0): \\n rec = pStart \\n else: \\n rec = rec + pInterval \\n return rec\\n")
arcpy.AddMessage("Completed Calculation")
arcpy.AddMessage("Search Cursor to delete rows")
sql = r"FID > " + str(records_return)
rows = arcpy.UpdateCursor(sorted_out_table,sql,"","")
arcpy.AddMessage("Processing Update Cursor")
for row in rows:
rows.deleteRow(row)
del row, rows
arcpy.AddMessage("Deleted Rows")
The error i am getting in the Geoprocessing window shows that the script gets to the message ''Processing Update Cursor" and fails on the for row in rows section. What can i do to fix this? Error: Executing: PointDistance Start Time: Mon Oct 08 11:14:52 2012 Running script PointDistance... Processing Point Distance Completed Point Distance Processing Sort Deleting Previous Tables Completed Deleting Tables Completed Sorting Tables Adding new field FID Completed New Field FID Calculating FID Completed Calculation Search Cursor to delete rows Processing Update Cursor <type 'exceptions.NameError'>: name 'row' is not defined Failed to execute (PointDistance). Failed at Mon Oct 08 11:15:41 2012 (Elapsed Time: 49.00 seconds)
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10-08-2012
03:30 AM
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Hi, I am not particularly great with python so I'm guessing that %d thing in the whereclause of the cursor is some clever pyhton thing going on? My suggestion is to simplify that into something like: sql = r"FID > " + str(records_return) Then place the whereclause with sql string in the update cursor, its also makes it a lot easier to understand and debug! Also check that you are using the correct syntax for the field name, do you put in [] for example (e.g. [FID] > .....)? Just an idea... Duncan THANK YOU THANK YOU THANK YOU! It worked a treat, i had been thinking of doing the SQL expression outside of the function but it skipped my mind to turn it into a string field like that! Thank you very much Hornbydd!
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10-08-2012
01:51 AM
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956
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Hi, I am trying to develop a python script that I can create into a tool later on. General Process: Using the arcpy.PointDistance_analysis tool 1. User selects input feature and near feature. 2. User sets search radius 3. User sets the number of records to return in the table rather than all the records The tool then creates the output table. Sadly, it does not allow sorting before hand so i used the sort function. I have a few loops regarding the sort due to not understanding why the function does not overwrite the previous table called 'sorted_out_table'. After the sort i need a new unique identifier as the OBJECT ID becomes obsolete to use as it is not in order.. So i create an FID and include a code block to create sequential numbering Finally i want to create a update cursor to delete the rows that are higher than the user specified, i.e. 5 I have commented out the 'getparameter' functions and used examples just to test it. This is the error I receive: Processing Point Distance Processing Sort sorted_out_table TestingSort Completed Update Cursor Adding new field FID Calculating FID Deleting Rows Traceback (most recent call last): File "H:\Pointdistancescript.py", line 63, in <module> rows = arcpy.UpdateCursor(sorted_out_table,"FID > '%d'" %(int(records_return),),"","") File "C:\Program Files\ArcGIS\Desktop10.0\arcpy\arcpy\__init__.py", line 841, in UpdateCursor return gp.updateCursor(*args) File "C:\Program Files\ArcGIS\Desktop10.0\arcpy\arcpy\geoprocessing\_base.py", line 362, in updateCursor self._gp.UpdateCursor(*gp_fixargs(args))) RuntimeError: ERROR 999999: Error executing function. An invalid SQL statement was used. An invalid SQL statement was used. [sorted_out_table] >>> It gets right down to the Update cursor successfully.. Why is it failing? HERE is the code import arcpy
import os
arcpy.env.workspace = r"pathto.gdb"
arcpy.env.overwriteOutput = True
# in_features = arcpy.GetParameterAsText(0)
in_features = r"pathtoPointDistance.shp"
# near_features = arcpy.GetParameterAsText(1)
near_features = r"pathtonearfeatures.lyr"
# search_radius = arcpy.GetParameterAsText(2)
search_radius = "20 Meters"
#records_return = arcpy.GetParameterAsText(3)
records_return = 5
# out_table = arcpy.GetParameterAsText(4)
out_table = r"pathtoPointDistanceAnalysis\OUTPUTTABLE"
print "Processing Point Distance"
arcpy.PointDistance_analysis(in_features, near_features, out_table, search_radius)
print "Processing Sort"
arcpy.env.workspace = r"pathto.gdb"
arcpy.env.overwriteOutput = True
# I have to delete the table from memory because the sort function does not allow overwrite?
for tbl in arcpy.ListTables():
try:
print tbl
if tbl != "OUTPUTTABLE": #
arcpy.Delete_management(tbl)
except arcpy.ExecuteError:
arcpy.GetMessages(2)
#Sort by distance - This messes up the order of OBJECT ID
arcpy.Sort_management(out_table, "sorted_out_table", ["DISTANCE"])
print "Completed"
sorted_out_table = "sorted_out_table"
print "Update Cursor"
print "Adding new field FID"
arcpy.AddField_management(sorted_out_table,"FID","DOUBLE","","","","","","","")
print "Calculating FID"
#Calculate FID using codeblock - THIS WORKS - TESTED
arcpy.CalculateField_management(sorted_out_table, "FID", "autoIncrement()", "PYTHON_9.3", "rec=0\\ndef autoIncrement():\\n global rec\\n pStart = 1 #adjust start value, if req'd \\n pInterval = 1 #adjust interval value, if req'd\\n if (rec == 0): \\n rec = pStart \\n else: \\n rec = rec + pInterval \\n return rec\\n")
print "Deleting Rows"
#FAILS BELOW
rows = arcpy.UpdateCursor(sorted_out_table,"FID > '%d'" %(records_return,) ,"","")
for row in rows:
print row.getValue("FID")
rows.deleteRow(row)
del row, rows
print "Done Updating now deleting"
print "Deleted"
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10-04-2012
07:44 AM
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