The act of setting up computing instructions, usually stored in a file and interpreted at run time.

learn more… | top users | synonyms (1)

3
votes
1answer
579 views

How to get the Flow or directional raster map using GRASS?

Aside from using r.fill.dir in GRASS, is this the script to produce the Flow or directional raster map? Is the output for the script the following graphic? ...
3
votes
1answer
85 views

Automating QGIS project composer printing?

I have a large project which consists of around 10x QGIS project files. Each project contains a print composer with an atlas set up to generate up to 10 maps. What is the easiest way to automate the ...
8
votes
3answers
3k views

How to use QGIS Zonal Stats Plugin from Python Console?

I am using the Zonal Stats plugin in QGIS to extract raster statistics from overlaying polygons (I have shapefiles of species distribution and I want to extract environmental data from within each ...
0
votes
1answer
26 views

How to Correctly fill in Parameters of QGIS Toolbox Tool “selectbyexpression”

I'm trying to use the tool "qgis:selectbyexpression" in one of my own scripts. But it doesn't work. My question is simple: "Why?" :) My hunch is with the 2nd parameter, the 'expression' (see "HOW ...
2
votes
1answer
181 views

Conditional SQL Query

I've been running a code that searches a desired field in a feature class and performs an specified SQL query based on whether the field is string or double. The variables are just temporary fillers ...
1
vote
1answer
48 views

QGIS Processing Script will not Validate

I am writing a script for QGIS that will identify the perimeter of only external facing walls. The script is probably a little long to post directly into this post, but it is accessible here. The ...
3
votes
1answer
348 views

QGIS' Join Attributes by Location not working from Python script

I have a shapefile with points, and a shapefile with polygons. I want to sum the attribute value of all points that are within a certain polygon, and I'd like to do this for each polygon in my ...
2
votes
1answer
77 views

Capturing Output Messages from GRASS when Running Python Scripts

Thanks to the excellent documentation here: https://grasswiki.osgeo.org/wiki/Working_with_GRASS_without_starting_it_explicitly#Python:_GRASS_GIS_7 I've figured out how to access GRASS modules in ...
1
vote
0answers
315 views

Extract by mask run time error in VBA

I have the following script language code shown below within a main code just to run the tool of spatial analyst "Extract by mask". Unfortunately, when I run it I get a Run Time Error. I checked file ...
3
votes
1answer
58 views

Running ArcView Avenue scripting files in ArcGIS?

Is there any way possible to run ArcView 3.3 Avenue Scripting files (.ave and .avx files) into the newer versions of ArcGIS 10.x? I am aware about the fact that ESRI has stopped supporting its ...
0
votes
2answers
446 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 ...
2
votes
1answer
86 views

Proper Use of QGIS tool: “Frequency analysis”

Trying to use the "Frequency analysis" tool in a script but getting errors. The Online documentations for this tool: processing.runalg('qgis:frequencyanalysis', input, fields, output) My Script: ...
1
vote
1answer
47 views

What are the 'output_layer' Parameter Options for QGIS tool “saveselectedfeatures”?

After a few comments and my own consideration I've completely Edited the content (and title) of this post. QUESTION What are valid "output_layer" parameter options when scripting with the ...
1
vote
1answer
1k views

ArcGis Server Java script API error code 500 while using proxy.ashx on one particular server

I am looking for help with using proxy.ashx in Javascript API on one particular server at a client site. We have a GP service that the proxy is used to access (when request is more than 2048 ...
2
votes
2answers
136 views

Dissolve line segments in QGIS if they touch and fall within the same class. (tools or script?)

I have line segments that have the following 3 attributes (Class, start_point, end_point). I would like to merge/dissolve line segments that fall within the same class if they intersect (touch). i.e. ...
1
vote
1answer
29 views

Set a Vector input as a variable in QGIS Tool Script

In a QGIS script, how do you set a Vector input (via your tool's GUI) as a variable which can then be used in subsequent processing in your tool's script? I know how to set a map Layer as a variable, ...
4
votes
2answers
132 views

Iterate an intersect between polylines and polygons in QGIS using Python script

I have a shapefile made up of 127 separate polygons that represent different districts. Overlaid on this layer is a polyline layer of 2800 streets, some which are completely bound by the polygons and ...
2
votes
1answer
44 views

Setting Instance of MULTIPLE LAYERS using “mapLayersByName” in QGIS Python Scripting?

I'm currently using "mapLayersByName" successfully to set one active layer at a time as follows... vl = QgsMapLayerRegistry.instance().mapLayersByName('My_Layer')[0] iface.setActiveLayer(vl) Can ...
2
votes
2answers
4k views

How to zoom to the extent of a query result

Does anyone know how to change the extent on the map in function of a query? in legende I have no problem using the function showResults (featureSet) {... but, can not get any display in AMD. Here ...
5
votes
1answer
90 views

Create a temporary intermediate layer in a processing script

My algorithm needs a temporary layer in a QGIS processing script. I can use regular pyqgis api to create a temporary layer but want to know if there is a preferred and processing-specific way of doing ...
4
votes
4answers
4k views

Batch shapefile merge, with adding and calculating field

I have over 60 shapefiles, all in their own folders. I'm looking to add a field titled "Name" and then populate it with the name of the shapefile. I want to be able to do this so that I can then ...
2
votes
2answers
35 views

Moving Point Features (within a Polygon) to the Edge of those Polygon Features

I have a bit of a complex task, and was wondering if anybody has knowledge that could assist me. Data: Water utility data that is not connected through a geometric network. Data includes Parcel ...
1
vote
0answers
31 views

Implementing Python script in QGIS with input variables?

I would like to implement this script in QGIS: How to draw perpendicular lines in QGIS? and be able to choose input data from the layers in my map, and iterate over them. The script from the link ...
2
votes
1answer
847 views

Getting Script Error has occurred in script on this page when running polygon to raster conversion? [closed]

i keep getting the script error problem every time i try using polygon to raster tool in ArcGIS 10.1. Please help me how I can solve this? screenshot embedded
0
votes
1answer
42 views

Count Number of Unique 2-Field Combinations in QGIS Table

I have a table where properties are identified by their PID. A property can have multiple civic address points (e.g. larger buildings), but even when they do they still tend to border on only one ...
0
votes
0answers
28 views

Collector Python data editing

So just to start off with... I have a horrible rudimentary level of Python, so if someone plans on dropping code as an example, I will definitely have trouble following it. Apologizes abound... I do ...
0
votes
0answers
42 views

QGIS 2.8/.10/…crashes when I run, into PyQGis Console, a script within “exit command” of any GUI designed with the same pyQgis script code…Why?

I use QGis 2.8 or 2.10. I open Console PyQGis, so I can write Python specific code that I can design any GUI, as a simple Window Form. After I wrote this code I run this script created and it's ok ...
2
votes
1answer
52 views

How to write QGIS script to load Output file to Map Project with Desired Name?

Good news: the following line of code does produce the output as a shapefile with the name I want ("MyFile") and where I want it ("path"), path = "/Users/User1/Desktop/" ...
1
vote
2answers
84 views

QGIS Tool Scripting Help with “Select by attribute”

** I've gone back and edited (shortened and focused) my own question QUESTION: Why am I getting the error message "The following layers were not correctly generated: Output", when writing a script ...
0
votes
1answer
44 views

Copying Multiple Selections (by Attribute) to One Output Shapefile using QGIS Python scripting?

INTRODUCTION The code below makes a selection and then saves to an 'Output' file (shapefile?) each time through the "FINAL ITERATION LOOP". Each 'Output' file will contain all selected civic address ...
1
vote
1answer
48 views

Scripting with “self” in QGIS

What is "self" and how can I use it error-free in a Q script? Example: mc = self.iface.mapCanvas() But when I try to run this in the Console I get the following error: NameError: name 'self' is ...
1
vote
1answer
20 views

How to Make Scripted Tools Load Output File Automatically into QGIS Project?

When writing your own scripts, and using some of the pre-fab tools how do you make the output load automatically into your QGIS project? Example: In the Help Tab of the QGIS tool ...
5
votes
1answer
82 views

Understanding background to Single Hash (#) Vs. Double (##) in QGIS Python Scripting?

First of all I understand the double hash (##) is used to define the Inputs / Outputs in a script's GUI. If there's more to it than that please let me know. In all other Python coding I've done ...
0
votes
1answer
47 views

How do I export data to a new table?

This is my script and I need to create a new attribute table which contain the information on the print line. Could someone help me? import arcpy from arcpy import env import datetime env.workspace= ...
1
vote
1answer
58 views

qgis-processing: how to specify optional outputs?

Suppose a script has a variable number of outputs, which may or may not be produced depending on settings: ##Input_layer=vector ##Output_1=output vector ##Produce_output_2=boolean ##Output_2=output ...
1
vote
2answers
598 views

QGIS's raster calculator— running as a batch process?

I have a series of raster files (150 or so) that I need to multiply by a baseline raster. Unfortunately, the series of rasters have a different cell size (30m×30m i.e. .00027777778 degrees ...
3
votes
0answers
52 views

Possible to create AutoCAD-like grading lines in ArcMap?

I often need to show grading for roads and ditches. This is what the map readers require and what the standard symbology for grading is. These 3D lines can be easily created in AutoCAD civil 3d and ...
1
vote
3answers
162 views

Processing modeler: how to dissolve a vector layer and sum the attributes

I have a complex workflow prepared in the processing modeler, but I'm missing one step to link all the model. I need to dissolve a polyline vector in a single line vector that has as attribute the ...
1
vote
1answer
257 views

Implementating Analytical Hierarchy Process with ArcGIS 10.2 for Desktop?

I want to use the AHP in arcmap 10.2. I have tried using the arcscript available from http://arcscripts.esri.com/details.asp?dbid=13764 Which was designed for Arcmap 9.2. I was able to get as far ...
0
votes
1answer
60 views

Creating a Python Script [duplicate]

Is there any information out there on how to start creating scripts using Python and QGIS 2.10? I only have a little coding experience and an very unsure of how to start. My first script would ...
-3
votes
1answer
78 views

How to write a script that will merge shapefiles? [duplicate]

We use an application called IntraMaps Roam. Our guys go out in the field, mark up their maps with GPS points, and then bring them back to the office. They will copy their shape files to the server ...
2
votes
0answers
149 views

GeoServer 2.7.1 fails to start after installing 11-Aug-2015 scripting extension

This problem does not appear to be version specific for me. I have tried this several times with different versions and different system configurations. As the title states, when I add the script ...
2
votes
1answer
90 views

Is it possible to remove parameter values from the Python Window when running a script in ArcGIS?

When I run a python script in ArcGIS Desktop 10.1 the values from the parameters will be written to the Python Window (marked with red in the picture below). Does anybody know if it is possible to ...
1
vote
1answer
858 views

Linux Client for OpenGTS server

I've installed an OpenGTS server and successfully linked it with the GPS2OpenGTS_Pro application for android. The buses I'm tracking offer 3G with a wireless AP, however whenever the bus stops, the ...
5
votes
3answers
3k views

Python: Combine multiple Shapefiles

i have got a lot of Point-Shapefiles (r20010101.shp, r20010202.shp, r20020101.shp...). Each of them has the same amount of points at exactly the same location. In a column that is named after the Date ...
-1
votes
1answer
78 views

Is it possible to import/run AML script into GRASS?

I have an AML script that has instructions to import tmp files of (grid, network, basin...) is there any way to run the script in GRASS? I tried to converted to Python but I couldn't do it for the ...
1
vote
0answers
24 views

Point to point best link finder, need script?

I am planning a point-to-point microwave system in a geographically very hard area where it is full of mountains. I was searching if there is a way that I set a point and then script a code to search ...
5
votes
1answer
2k views

How to automate the drawing of polygons (square) around a number of points in QGIS?

In QGIS (or alternatively any other scripting + GIS stack), how can I automate drawing a 100km x 100km square around a number of points, with the point being dead in the center? I'd need to loop ...
0
votes
0answers
28 views

Creating and running custom scripts on a Geoserver

Is it possible to write custom scripts on a Geoserver. I need a script that can capture a WFS Request for some polygons etc. But instead of getting it from the Geoserver data base. I need to take that ...
-1
votes
1answer
42 views

Feature Attribute Count Script

Using an arcpy script how do I get the feature attribute count per feature class in a fileGDB? Ideally I would like to output to a spreadsheet, with the feature class name in one column and the ...