Python is an open source interpreted programming language used in many GIS programs.

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1answer
15 views

Script not processing shapefiles from one folder to another

I am working on a script which takes shapefiles from one folder called "Original files", process them and then output the results into another folder named "Processed files. I asked a question on how ...
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0answers
12 views

How to import osm.pbf file into database with Python Imposm

I want to import a .osm.pbf file with the Python library Imposm. Currently my work flow is the following: import requests import os city_name = 'santiago_chile.osm.pbf' url = ...
2
votes
1answer
37 views

Replicating result of gdalwarp using gdal Python bindings

I am trying to re-project/resample with the GDAL python bindings, but am getting slightly different results compared to those from the command line utility gdalwarp. See update below for shorter ...
2
votes
1answer
50 views

Copy protection via license file for ModelBuilder models?

I've build a large model in the ArcGIS ModelBuilder and I want to share this toolbox with some other people BUT I don´t want to lose control over it. The first step was to set a password to my script, ...
2
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0answers
29 views

Python code for decreasing polygon size based on percentage?

I would like to decrease the size of polygons by percentage and not by distance in order to implement this into ModelBuilder to loop over a number of polygons. To my knowledge this tool is available ...
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1answer
45 views

Creating a desktop GIS with arcpy analysis [on hold]

What is the problem with this code? I want to make a desktop GIS with this code in ArcPy. Can anyone help me?
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2answers
46 views

Automation of changing symbology for a given layer

I have a shape file that is a 10-by-10 grid of squares. The shape file has 50 attribute columns (named p_1 through p_50) where each column has 100 entries (corresponding to the 100 grid squares) and ...
1
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1answer
43 views

When using Data Driven Pages is it possible to tell if a feature is contained within the layout?

I'm using polygons to drive my DataDriven Pages in ArcMap Standard 10.2. I have a point feature that shares a common attribute with the driver polygon, and using the Page Definition, I am showing ...
5
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1answer
337 views

data driven pages format

I have an issue, but I don't even know the terms needed to search for an answer. I'm exporting the pages to png files. The pages are divided by lots. Each page has a label with the lot number. In ...
0
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1answer
121 views

Loading graph (.grf fle) into MXD using ArcPy?

I have hundreds of pairs of FGDB and associated MXD files. I need to insert a graph in each mxd linked to its corresponding FGDB. No problem creating graph, but stuck on how to get graph into mxd ...
0
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1answer
265 views

Orthographic reprojection with mapnik

I am trying to create a google earth like wep application. My problem is that I can't get to render a full view of the earth. The zoom_all() function generates the following error : RuntimeError: ...
10
votes
2answers
5k views

Creating line of varying distance from origin point using Python in ArcGIS Desktop?

I'm trying to create a line feature from a single point, using a set distance and angle. Using ArcGIS and Python (I hope). I have a point at these coordinates: X = 400460.99, Y = 135836.76 From ...
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2answers
1k views

ArcGis Python Script, Calculate Field

Sorry for my English. I am trying to write a Python Script for ArcGis 10.2. #import system modules import arcpy import math from arcpy import env #Set environment options ...
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0answers
26 views

Calculating distance from PointGeometry object to polyline in arcpy

I created a PointGeometry object on ARCPY and I'm trying to measure the distance from that point to the closest point on a polyline table.. The PointGeometry object has an easy function for that ...
0
votes
1answer
24 views

Using pymssql to create a table using python ArcMap 10.3

I am using ArcMap 10.3 have a my data in a geodatabase (MS SQL Server Express) and I am trying to write a python script that does a bunch of spatial and non-spatial data manipulation. I need to dump ...
3
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0answers
37 views

Jenks Natural Breaks in Python: How to find the optimum number of breaks? [migrated]

I found this Python implementation of the Jenks Natural Breaks algorithm and I could make it run on my Windows 7 machine. It is pretty fast and it finds the breaks in few time, considering the size of ...
0
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1answer
69 views

Problem exporting ecw project- arcpy

I work with arcview 10.3. Every time i export maps with ecw raster format , python (version 2.7.8) get crashed and i see: I use this code: import arcpy,os,sys,string import arcpy.mapping from arcpy ...
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0answers
26 views

Spatial Interpolation/Resampling of Point Surface Data - Axes @ Different Resolutions

I have a simple set of data points in x,y,z format. This was data collected from a ground penetrating radar over a physical distance of: 45m x 25m With a resulting grid of: 90 x 100 (9000 points) ...
1
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1answer
44 views

Where is the python library of QGIS 2.8

where is the Python library for QGIS 2.8 on a mac (10.10)? I cannot find it... sys.path in the QGIS python console gave me some path, but where the interesting part is happening it replaces the ...
6
votes
1answer
834 views

How to automatically generate useful scales for data driven pages in ArcGIS desktop

I have been tasked with creating several hundred maps of properties that intersect a long pipeline. The maps will zoom to the part of the property which shows the intersection. The lengths of ...
0
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0answers
35 views

Speed up row-wise point in polygon with Geopandas

I have a geopandas GeoDataframe which contains some attributes and a geometry column which is filled with shapely Point(lon, lat) objects. Moreover, there is a GeoSeries which is equally indexed as ...
0
votes
3answers
60 views

SearchCursor Index Out of Range

I'm using ArcGIS 10.2 and trying to obtain values in a field using SearchCursor. Would someone help me with this? import arcpy oc = r"C:\Users\Scratch\oc.shp" catchments = ...
1
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1answer
39 views

In ArcPy, How to call specific columns of attribute table?

I'm trying to figure out how to spline specific columns of a shapefile attribute table, but my question is intermediate to this-- how do I select a range of columns, e.g. the 20th column to the ...
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0answers
15 views

Stopping a route using attributed length

I am working in a project where I need to run routes from several points on a route network and have them stop at a specific length. I have worked out their max distance want to use this attribute to ...
4
votes
2answers
1k views

Setting the extent for a QGIS map using python

I am writing a stand-alone application in Python/QGIS that simply creates maps. I want to load vector/raster layers, set symbology, set extent At the moment, that is all! Currently I am just using ...
1
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1answer
580 views

How to refresh a Combobox Add-in in ArcGIS 10.1

I need to refresh the value in the combobox after an event from other tool in the same add-in (ARCGIS 10.1. Python). I've changed the value of the combobox with the code: combobox.value = val and I ...
0
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1answer
43 views

How do you project a single pointGeometry object with arcpy?

In an attempt to create a python add-in for ArcMap that will pass x and y coordinates to another application via a mouse click on the map, I have written the following code. I need the output ...
0
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1answer
136 views

QGIS Python - Convert the CRS of an in memory vector layer

In a python script of qgis I load layers from different datasources using the QgsVectorLayer() and the QgsRasterLayer() commands. The coordinate reference systems of the data sources differs. Since I ...
2
votes
2answers
253 views

Writing shapefile with projection defined crashes fiona

I've just started trying to use Fiona to write out shapefiles. I found the example code below, which seems to work fine from shapely.geometry import mapping, Polygon import fiona # Here's an example ...
1
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1answer
20 views

Create Multiple Feature Layer and Add to MXD

I am really stuck with this one and cannot seems to get the code to execute. Every time I do so, I get the error: Input Features: Dataset [u'Test1'.....] does not exist or is not supported. My guess ...
0
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1answer
35 views

Create Several Feature Layers and add them to a MXD

Every time I run this script now, I get an error on the line with the MakeFeatureLayer line. Sorry for all the questions! I'm really new to Python. import arcpy, os arcpy.env.workspace = ...
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votes
2answers
74 views

SnapToCurrentLayer in QGis2.8 with python programming

I have a polygon vector layer and I want to snap the vertex. def canvasMoveEvent(self,event):   x = event.pos().x()   y = event.pos().y()   startingPoint = QPoint(x,y) ...
2
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2answers
133 views

Delete Files in a folder and disregard an existing folder

I did a lot of geoprocessing steps and now I like to delete all files including result, result, _join, _interand reclass in their name. I can do this with the following import glob import os for fl ...
3
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2answers
1k views

set values in feature class attribute table to null

I've created a point-data featureclass (fc) containing data from a simple .txt file using Arcpy as follows: arcpy.CreateFeatureclass_management(out_path= outPath, out_name= 'fcTest', geometry_type= ...
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0answers
46 views

Help with python, import update csv values to feature class fields

I am trying to update a bunch of field values from a csv file where there are existing (incorrect) values in my featureclass. After searching I came across a similar post (Help with Python Update ...
0
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1answer
22 views

Exporting list of tables contained in *.mdb with ArcPy gives Indentation Error?

I'd like to export to excel each of the tables in a .mdb database as separate .xml files. The code works until the last line which gives an unexpected indentation error, and I'm also struggling with ...
1
vote
1answer
30 views

Install gdal in python on Windows7

I'm having problems installing the gdal library for python. I use a Windows 7 and have WinPython 2.7.9.2 which runs Python 2.7.9. I'd like to use gdal + Python for raster manipulation. I've read ...
0
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0answers
48 views

trying to build world file for images based off extent rectangle generated from centroid in python

I have centroids for map images which I would like to georeference quickly and rougly via python script, using arcpy. I know the dimensions of the images, the dpi, scale, rotation and the coordinate ...
1
vote
1answer
27 views

Concatenating fields while also replacing values within certain stings [on hold]

I am trying to use python to concatenate multiple fields in a polygon layer. Specifically, I am attempting to combine the values of four fields into one: EXPCODE = !MATRIX! & !PLANT! & !PCT! ...
0
votes
1answer
44 views

Alter Fields in multiple feature classes in multiple workspaces

I have 22 geodatabases all in one folder. Each gdb has two feature classes. For each feature class, I need to rename a few of the fields. I've had success with this code, but it only works for each ...
1
vote
2answers
54 views

ArcGIS JS API: parse GP Service messages

I am working on a JS app where the user draws a polygon and then a python-based GP Service task queries the parcels and generates mailing labels. The GP task works great, but once the PDF is created ...
0
votes
0answers
14 views

Mapserver Python Mapscript - Is There An Equivalent to Mapnik's Python Plugin?

I have been developing a sophisticated web mapping app using MapServer in conjunction with the Python MapScript bindings - and it has been working great. However, I am thinking a custom data provider ...
1
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2answers
36 views

Can I plot this “diagram” in matplotlib

I am not sure weather that is the right stackexchange here. I want to grade a diagram like this: http://matplotlib.org/examples/shapes_and_collections/scatter_demo.html Unfortunately, I have no idea ...
0
votes
1answer
142 views

when using arcpy.mapping.ListDataFrames, python.exe crash

Has anybody had this problem? this drive me crazy. what is wrong with my code? import arcpy mxd = arcpy.mapping.MapDocument(r"D:\Project\Project.mxd") df = arcpy.mapping.ListDataFrames(mxd, ...
1
vote
1answer
243 views

Using GDAL to read dted files

How do I get the elevation at a certain point using gdal to read in a dted file? I don't see much useful information out on the web. I'm sorry I should have been more specific. How would I ...
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votes
5answers
1k views

Will there be a Python API for ArcGIS Server?

It seems like an obvious next step given the big push towards Python in ArcGIS Desktop at 10.0. Are there any limitations of Python compared to javascript, flex, etc that would prevent ESRI from ...
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2answers
40 views

remove values in list using logical operators

Just would like to ask how can I masked or remove the values in my list based on logical operators. Here is the case: I converted an NDVI.img file into a 1 dimensional array. and as part of the ...
0
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1answer
39 views

Problems with Geometry collections. (Fiona: write output of Multipoints and Points)

Updated: I am getting the following error on this function: ValueError: Record's geometry type does not match collection schema's geometry type: 'Point' != 'MultiPoint' The problem is that I have ...
3
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2answers
226 views

How to convert polygon singleparts to multipart?

I am interested in converting a polygon featureclass created via Create Fishnet (Data Management) from singleparts to multipart. QGIS has a very handy tool called singleparts to multipart that does ...
2
votes
2answers
182 views

Running Python script in Task Scheduler— Script will not run

I have a script which I wish to run on a regular monthly basis without me needing to open and run the it. I have referred to every web page I can find on Windows Task Scheduler and followed their ...