Questions tagged [debugging]
A methodical process of finding and reducing the number of bugs, or defects, in a computer program or a piece of electronic hardware, thereby making it more reliable
67
questions
0
votes
0
answers
24
views
NNJoin plugin crash
I'm trying to run NNjoin plugin to compute nearest distance between my plot and buildings (urban) but I'm having this error :
Here are my files (maybe not projected yet but it should be in ESPG 23839)
...
0
votes
0
answers
7
views
QGIS Crashreport is not generating since I updated to 3.22.16
I'm creating plugins for QGIS and one of my biggest problems is to debug a QGIS crash.
When we worked with QGIS 3.10 the stack was saved to "C:\Users\User\AppData\Local\QGIS\QGIS3\crashes"
...
- 29
0
votes
0
answers
14
views
Displayed entities toggle at each zoom level on OpenLayers map [duplicate]
I have a PostGIS table connected to my GeoServer in which I have published a layer of 80 multipolygon features. The multipolygons have very different sizes and are displayed correctly in the ...
- 638
0
votes
0
answers
62
views
How to preview PBF query results in the browser debugger?
Working with ArcGIS Maps SDK for JavaScript, I want a quick preview (in the browser debugger) of the results of a query. For example, when clicking on a polygon in the PopupTemplate sample, the ...
- 21.1k
2
votes
0
answers
76
views
Mininum cluster size in QGIS ST-DBSCAN sometimes not applied correctly
I have 7 point vector layers which I am clustering as a batch in QGIS using the standard ST-DBSCAN tool.
On one instance, I formed two groups based on different minimum cluster sizes: 7 or 10. The ...
1
vote
1
answer
51
views
QGIS 3 incorrect rounding with QgsCoordinateFormatter.format()
I use QGIS 3.30.1 to format geographic coordinates.
At some precision values, the formatting result is not what I expected (it is wrong!).
Before writing a bug report, I would like to get a ...
- 7,084
0
votes
0
answers
46
views
Area change error moluscle
I want to simulate future LULC change using QGIS 2.18.24 Molusce plugin. When I was running update tables option under area change, I got a python error message shown on the screenshot below.
How can ...
0
votes
0
answers
62
views
Error exporting CSV file to drive from GEE
I am working on a project where I cross-classify several regions with each other. In other words: I train several classifiers on imagery from different regions and classify all images of all regions ...
- 17
0
votes
0
answers
30
views
Not getting any runtime errors from QGIS Plugin
I am working on developing QGIS plugin, but I don't get any errors (beside initial, for example when I try to import non existing class). My colleague gets window with error and message in Log Panel, ...
- 594
0
votes
1
answer
339
views
PyQGIS QgsMessageLog "NameError: name 'Qgis' is not defined"
I'm trying to debug a pyQGIS plugin, but can't get one of the Qthread working. I was told QgsMessageLog was the best way;
QgsMessageLog.logMessage("before simplify", "plugin", ...
- 336
1
vote
0
answers
50
views
"no data" result from raster calculator
Am trying to implement the following line in QGIS raster calculator:
("L@1" < 0) * ((1 - 16 * 200 / "L@1")^0.25) + ("L@1" >= 0) * 1
Basically, when L is less than ...
- 11
1
vote
0
answers
119
views
Deleting features in one layer causes changes to another in QGIS
I had two identical layers in a map (one original and one copy). I noticed two features in the attribute table of the copy layer not related to any polygons on the map, which I deleted. This caused 3 ...
- 41
1
vote
0
answers
115
views
Debugging QGIS plugin using pdb
I typically use pdb for debugging. However, when I follow the docs for debugging with pdb, I get the error:
input(): lost sys.stdin
I'm developing my plugin straight out of the load directory:
%...
- 249
0
votes
1
answer
523
views
Unable to apply symbology in ArcPy script tool
I am having a strange issue that I can't seem to figure out. I am writing a simple script that will automate a map production workflow. In part of the script, I import a new feature class as a layer, ...
- 139
2
votes
2
answers
1k
views
Backed up shapefile is no longer a "valid or recognized data source"
I'm working on a project regarding the coastline of Tampa Bay and over a long period I've edited a 2004 snapshot of the coastline from a line shapefile into a polygon shapefile representing the ...
- 171
1
vote
0
answers
39
views
Vertex marker in Edit Vertices not appearing on half screen
I'm using ArcMap on ArcGIS Desktop 10.5 and when I enter the Edit Vertices context, the vertex markers on the left side of the screen are hidden. You can click on them, but the marker does not appear. ...
- 338
8
votes
1
answer
968
views
Debugging QGIS from Visual Studio
I try setup a QGIS debug environment under Windows10 64bit.
I followed the instrictions given at https://github.com/qgis/QGIS/blob/master/INSTALL#L423
I also had a look at
https://www.shaeffer.co/...
- 8,714
0
votes
2
answers
858
views
ArcPy script causes Python crash when run outside of ArcGIS Python window
I have a Python script that will successfully complete when run from the Python window in ArcMap or ArcCatalog, however, when I run as a standalone it will cause python.exe stopped working crash once ...
- 1
1
vote
2
answers
4k
views
QGIS 3.8 could not start ''Qgis_app.dll is missing'' check runtime environment check C:\OSGEO4W64\bin\qgis-dev-bin-g.exe
I had Qgis 3.4 running well on my PC Windows 10, 64 bit. I tried to upgrade to Qgis 3.8 Zanzibar and I had the error message:
''Qgis_app.dll is missing check runtime environment check C:\OSGEO4W64\bin\...
- 17
3
votes
2
answers
3k
views
Debug QGIS3 plugin with Visual Studio Code
I would like debug QGIS plugin using Visual Studio Code. I have Win10 and QGIS 3.4.4. I followed the instructions written in these two sites:
How to setup QGIS 3 and Visual Studio Code plugin ...
- 287
1
vote
1
answer
82
views
Measure loading time of layers in Mapserver
I use mapserver to generate one single tile per request. The mapfile contains several layers and I would like to know which of them is the bottleneck that needs too much time to render.
WIth shp2img I ...
- 8,714
1
vote
1
answer
261
views
Number converted to dictionary in Earth Engine
When reducing an image to number on it's geographical coordinates, the code does return a number, which is what should happen.
var accum = ETo.reduce(ee.Reducer.sum());
var accumNum = accum....
- 13
3
votes
1
answer
334
views
Update QGIS Canvas while debugging
I am upgrading some QGIS 2 plugins to QGIS 3 and need to do some debugging. It appears that the canvas does not update until the code stops running, regardless of any calls to self.iface.mapCanvas()....
- 479
1
vote
2
answers
49
views
ArcPy error handling within a C# wrapper
I'm running arcPy commands from a C# script i.e.
RunPythonScript("arcpy.Delete_management(\"C:\\\\Temp\\\\NW\\\\land.gdb\", \"Table\")");
private static void RunPythonScript(string script)
{
...
- 165
0
votes
1
answer
264
views
How to call GEOS error handlers provided during initialization (initGEOS)?
From what I learned, when using GEOS in C/C++, it should be initialized first using initGEOS :
extern void GEOS_DLL initGEOS(GEOSMessageHandler notice_function,
GEOSMessageHandler ...
- 11k
2
votes
1
answer
591
views
ERDAS Imagine signature picker colour changing RGB numbers?
I've noticed something with the signature picker in ERDAS and I was wondering if it is a bug or a feature.
When I create classes I assign a colour to make them easily readable in the classified ...
- 51
2
votes
0
answers
85
views
QGIS expressions don't evaluate as expected
I am using QGIS with a vector layer and the attribute table stored at this link:
https://docs.google.com/spreadsheets/d/1K7rRdlcSheclJ6MqzpBNwSZei911WDV1Bl2zBGV38-s/edit?usp=sharing
I then have the ...
- 21
2
votes
0
answers
135
views
qgis: can't find eclipse pydev path using remote debugger in linux enviroment
I'm trying to configure pydev and eclipse with qgis for remote debug. Everything worked fine in eclipse and i can start the debug server.
The problem is that Remote debugger plugin requires a pydev ...
- 121
14
votes
3
answers
5k
views
Easy way to see the requests QGIS makes to a remote server?
I'm attempting to debug an issue with a remote ArcGis Server's WMTS as seen from GeoServer. I can see the requests GeoTools is making (because they throw an error and get logged). However the service ...
- 80.4k
3
votes
0
answers
497
views
Autocompletion for VS and Eclipse when debugging QGIS plugins
I have been trying to get autocompletion to work in first Eclipse and afterwards tried with Visual Studio. I have been following these guidelines / Stack Questions
IDE settings for writing and ...
- 249
5
votes
1
answer
142
views
Labels displaying with multiple bounding rectangles
While setting up labeling of a line (road) layer, the labels started displaying with multiple bounding rectangles along with the text.
After trying many different labeling configurations without ...
- 323
1
vote
1
answer
299
views
Building QGIS master on Windows 7
I'm trying to build a debug version of QGIS on windows env for this I'm using the bat file package-nightly, I followed all steps presents in INSTALL file but without success.
When I executed the bat ...
- 131
5
votes
1
answer
3k
views
Enable LOG Messages in QGIS
How to enable log message in QGIS? debug mode or verbose mode.
I put variable in my env but without success.
More informations to complete this question:
I would like to see messages of detail the ...
- 131
2
votes
1
answer
349
views
Add custom base-map in Carto.com
PROBLEM: The functionality 'Insert your WMS/WMTS URL' in the 'Add a custom base-map' menu does not work and cannot be debugged properly.
BACKGROUND: Following the instructions at CARTODB MAKES IT ...
- 183
2
votes
2
answers
144
views
Issue reporting in QGIS
I've had an issue with the Processing plugin over that last few days. QGIS
has been really slow to start (about 15 minutes in some cases) and I then
get a message that says "Plugin Processing: the ...
- 1,195
1
vote
1
answer
2k
views
How to trace SQL queries sent by geo Server to Oracle database?
When I open GML view of WFS layer in geoserver, it throws this exception:
"java.io.IOExceptionORA-00918: column ambiguously defined"
I am unable to trace SQL queries sent by geo Server to Oracle ...
- 11
6
votes
2
answers
502
views
Investigating PostGIS functions to see what they are doing?
Let's say you have a function like ST_Distance and I want to know how it works. The docs don't say much at all, how do I go about debugging this or figuring out how it ticks.
- 7,031
1
vote
0
answers
336
views
Where I can find QGIS debug libraries?
I use QGIS 2.12 in my standalone application. Now I want to upgrade my application to the lastest QGIS version (2.16). I use OSGeo4W installer to download all headers, libs and other files. I have ...
- 81
0
votes
2
answers
223
views
Python code execution error in QGIS WIEN
I have tried to make several different actions in QGIS but keep getting similar error messages when I try to select the output filename. The error message reads as follows:
An error has occurred ...
- 123
3
votes
0
answers
109
views
QGIS crashes when selecting symbols
I am using QGIS version 2.14.1 (Essen). I can open it no problem and load shapefiles correctly. However, when I go in the file properties and select "style"/ "unique symbols", the system crashes and ...
- 475
1
vote
1
answer
976
views
How to debug settings page of custom widgets?
I'm developing a setting page for my widget. To debug it, I consulted the guide again and found this advice:
During development, use http://your host/webappbuilder/?appid=stemapp
to directly ...
- 1,517
3
votes
0
answers
380
views
QGIS 2.14 Processing plugin crashes - TypeError: must be string, not None
I've recently installed 2.14, and it worked fine for the first couple of days (Appart from Grass tools), including several program and computer reboots.
Today I had this error show up
Couldn't load ...
- 8,556
1
vote
1
answer
2k
views
Syntax error at or near "1" -- PostGIS in Action -- Chapter 11 SQL data dump
I'm following along with PostGIS in Action, 2nd ed., chapter 11, while attempting the SQL dump from the data files and I'm getting the following error:
ERROR: syntax error at or near "1"
LINE 189: 1 ...
- 307
8
votes
6
answers
2k
views
Unable to debug Esri Addin for ArcCatalog
It was a toss of a coin whether this question is a GIS.SE or StackOverflow question... I'm going with GIS.SE because the problem seems to lie with ArcCatalog.
I have several addins that have been ...
- 25.5k
2
votes
0
answers
400
views
When debugging ArcGIS add-in, can't use "Edit and Continue"
I've been working on this add-in for years, and just today set up a new computer with VS 2013 and ArcGIS 10.3. When I run my add-in from the debugger, breakpoints can be hit, but I can't edit when ...
- 39
2
votes
1
answer
2k
views
Trouble shooting freezing/stalling issues in QGIS
I've been using QGIS for more than a year now (currently using 2.8.2 on MacOS 10.10.3, but also in Windows XP via VirtualBox for troubleshooting) and the application has been freezing and stalling ...
- 510
1
vote
1
answer
508
views
Debug QGIS crash on Windows 7 - how?
I'm developing a QGIS plugin, and under certain circumstances, it causes QGIS itself to crash. How can I debug this, given that I am on Windows 7? I've tried using the QGIS nightly dev build (which ...
- 5,832
2
votes
1
answer
2k
views
PyQGIS plugin debugging from Eclipse?
having trouble with debuging QyPython plugins from Eclipse:
- Win 7 x64
- QGIS 2.7
- Eclipse Luna with PyDev installed
Tried to debug using Remote Debugger (http://docs.qgis.org/testing/en/docs/...
- 291
1
vote
1
answer
496
views
Run C++ standalone application in debug mode
I write simple C++ standalone application using QGIS. It works and render vector layers from PostgeSQL database.
#define CORE_EXPORT __declspec(dllimport)
#define GUI_EXPORT __declspec(dllimport)
#...
- 81
0
votes
0
answers
923
views
MapServer Not Logging to MS_ERRORFILE
I'm attempting to debug a 500 server error with my MapServer (running as a FastCGI on IIS 7.5). This would be much less challenging if I could get some indication of where the failure is happening, ...
- 101