Questions tagged [python-3]

Use this tag when Python 3 (or any of its dot releases) is the version you are using.

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161 views

Set default version of Python in ArcGIS to 64-bit?

This is the output from Python terminal within ArcMap 10.6.1 for Windows 10: >>> import sys, numpy, matplotlib >>> print(sys.version, numpy.__version__, matplotlib.__version__) ('2....
3
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1answer
734 views

Setting reference frame for shapefile with pyshp?

I'm using pyshp to create new shapefiles with Python 3. My code runs without errors, but when I open the resulting file in ArcMap I get this error: The following datasource you added is missing ...
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0answers
38 views

Referencing image using GCP-file?

I'm trying to automate the actual geo-referencing in PyQgis/PyQt5. I went manually over the built-in GDAL Georeferencer in QGIS and saved a GCP-file. Also, the actual commands used for the conversion ...
2
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0answers
487 views

Python warnings in QGIS 3.4

I just opened the QGIS and this appeared. What does it mean? Is it serious problems? warning:/Applications/QGIS3.6.app/Contents/MacOS/../Resources/python/qgis/utils.py:672: DeprecationWarning: the ...
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0answers
108 views

Problems with LecoS plugin in QGIS on Mac Mojave

I wanted to install LecoS plugin in Qgis. But first error appears that I have to instal scipy for python in orderd to use plugin. Python was instaled using instructions from Qgis document, version 3....
1
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1answer
309 views

geoserver.catalog.FailedRequestError: Tried to make a GET request to http://localhost:8080/geoserver/workspaces.xml but got a 404 status code

I'm trying connect to geoserver via rest protocol by gsconfig-py3 in python3 ,I get this error, but when I type "http://localhost:8080/geoserver/rest" in browser I can see these items moreover when I ...
0
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1answer
235 views

Print elevation of different coordinates from .hgt file [closed]

I am trying iterate through the data(elevation) from .hgt file. I have attached the codes which i used to get the elevation from the file. from gmalthgtparser import HgtParser hgt_file='N09E076....
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1answer
138 views

How would I have an improper DMS value input return a message to the user in a Python 3 function? [closed]

My question is about input functions in python 3 specifically for a latitude conversion function from dms to dd. I'm new to python3 and having some trouble understanding how I would allow a user to ...
2
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1answer
411 views

How to move a layer position on the layers order

I am looking for a way of moving a layer to the top of the layer order once another layer is loaded. Using the following code extracted from this answer I get the error: AttributeError: '...
1
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1answer
190 views

Question about running python in QGIS3

I have 5 python scripts in the following folders : .\Signal_Slot_Example\main.py .\Signal_Slot_Example\ProgressDialog\init.py .\Signal_Slot_Example\ProgressDialog\Progress.py .\Signal_Slot_Example\...
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1answer
2k views

Smoothing shapefiles using Python

The purple is the original polygon to be smoothed and I would like to smooth the polygons as the red line using Python. I tried simplify but looks like I need a buffer and simplify the buffer. But I ...
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0answers
26 views

Writing and testing python code using existing OSGeo4W Python3 install?

Looking for a development environment, like idle, for Python 3.6.1 that I can install and use with my existing python3 installation from the OSGeo4W. I am trying to learn python for use with QGIS and ...
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0answers
52 views

gdalinfo --formats return different values in python3 than in OSGeo4W

I am working whit geopdf to obtain the layers. When I use driver = ogr.GetDriverByName('PDF') it return None, and obviously I can't open it. I have checked with the command gdalinfo --formats and it ...
5
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2answers
330 views

MessageLevel in QGIS3

I am trying to migrate a plugin to QGIS3 from QGIS2 and I am having issues with an API. The original python has QgsMessageBar.MessageLevel but https://qgis.org/api/api_break.html says it has been ...
1
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1answer
476 views

Open Data Cube how to continue after the creation of the database?

I have some questions about using Open Data Cube. First of all I have successfully installed the virtual environment with miniconda and the database with PostgreSQLPortable-10.1.1. Now I have already ...
1
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2answers
273 views

Automating calculation of NDVI with rasterio?

I want to automate this code below for other 99 images, the problem that I have is that each image is in its specific folder as it's mentioned in the picture below. the images are very big and I want ...
1
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2answers
79 views

Add Path to JPGs in Attribute Table based on Unique ID

I've been tasked with updating attribute table fields with file paths to image files in a folder based on a unique ID. I'm having trouble thinking up a script that will do this? I'm working on a ...
0
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1answer
273 views

How can I run an ArcPy Python Toolbox from Python3-shell?

I am trying to port an arcpy python toolbox from ArcMap to ArcGIS Pro. In ArcMap I had to use the 64-Bit-geoprocessing tool because of the size of the datasets, so I wrote a wrapper-Script for the ...
0
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1answer
81 views

How to read ALOS PALSAR data using gdal

I have downloaded ALOS-1 PALSAR level 1.0 data from data archive from Alaska Satellite Facility. After unzipping files ,I am getting image files,Leader Files,Trailer File and Volume File. All the ...
2
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0answers
117 views

Identify partial intersections between a polygon layer and a line layer using PyQGIS

I have a drains layer (polygon) around which I have created buffers of varying distances. I want to find the intersection between the different buffer layers and pipes (line) layer and accordingly ...
0
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1answer
542 views

Why does the output of gdal.RasterizeLayer differ from gdal_rasterize?

Problem I've recently noticed that the output from the gdal.RasterizeLayer function differs from the result I'm getting using the gdal_rasterize utility. I have geotiff of a SAR product that has ...
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0answers
180 views

Converting QGIS2 Plugins to QGIS3

I am trying to convert a QGIS2 Plugin to QGIS3; specifically the Quickfinder plugin (I am aware of QGIS3 Locator and no I do not feel it provides the same or similar capability just thought I would ...
2
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1answer
99 views

QGIS plugin: set the position of the featureForm

Im developing QGIS plugin (Python3) to open the featureForm (depending on some of my conditions (matching geometries,...))I use this code: layer = self.iface.activeLayer() ...
3
votes
1answer
983 views

Write a Spatial Join output to a CSV?

I am trying this example with different input files. My aim is to merge the country and point tables into one table using sjoin from geopandas and write to a CSV file. I took a look at 1. When I run ...
4
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2answers
643 views

Bug using Python 3.7 (from QGIS) and trying to install package with pip

I use QGIS 3.6 and Python 3.7 and I try to install a package with pip in command line tool under Windows 7 but I have the following message : Fatal Python error: initfsencoding: unable to load the ...
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0answers
732 views

Visualize big data HTML file created with Folium

I have written a Folium map of a French city with the possibility of visualizing attributes informations on click for each of its polygon which makes a huge file after 2 hours of calculation with the ...
0
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0answers
244 views

Loading spatialite with python3's module under Windows

I installed spatialite's Python module using pip: pip install spatialite I copied the mod_spatialite.dll found on https://www.gaia-gis.it/gaia-sins/index.html into my windows/system32 folder (I have ...
1
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0answers
176 views

QGIS plugin + project: Enter db credentials(password and username) programmatically

I am developing QGIS Python plugin. I have a QGIS project and layers stored in a PostGIS database. I don't want to store the password into the project and I want to avoid that user need to type ...
1
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0answers
746 views

How to insert a Polygon into MySQL database Table?

I have shapefiles which I converted to .csv format. I want to insert those into a MySQL Database table. I used ST_PolyFromText according to the MySQL reference manual. ## create table cur.execute("...
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0answers
177 views

Problems with GeoServer REST API via Python and text encoding

I have checked a few other threads talking about GeoServer REST API and encoding, but nothing seemed to work. I have a dataset already uploaded into GeoServer and now I just want to update some of ...
1
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1answer
1k views

Enabling Jupyter nbextension for ipyleaflet?

I was trying to test out this script https://github.com/tylere/PyDataNYC2017/blob/master/ipynb/satellite_analysis.ipynb but got stuck at the iteractive mapping part. import ipyleaflet map1 = ...
0
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1answer
535 views

Search plugin of Folium doesn't appear [closed]

I'm trying to reproduce the following jupyter notebook : https://nbviewer.jupyter.org/github/jtbaker/folium/blob/geojsonmarker/examples/plugin-Search.ipynb But once I'm trying to create the map I ...
1
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4answers
5k views

Click event on maps with Folium and information retrieval

I was wondering if there is a way in Folium to get the information on an entity we click on with Folium? I'd like the map to either open a tab with the attribute information or just send back ...
1
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1answer
141 views

Can't get the correct geometry values after MySQL querying

I have large points data and also a small bounding boxes. I want all the points present within this bounding boxes. With the extent of the bbox , I want to get all the points within this bbox. With ...
1
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1answer
1k views

QGIS 3 - QSettings().value(r“[…]”)[0:2] error - 'NoneType' object is not subscriptable

I'm trying to find a solution to launch a plugin from outside the QGIS console I've succeeded to call the plugin from the python console in the QGIS software but I'm now trying to do it outside of ...
1
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0answers
182 views

Launch a QGIS plugin from a batchfile

After having built a QGIS 3 plugin, I'd like to know how could I call my plugin without clicking on the plugin bar of QGIS to launch it. I've tried implement a first batch file for it : REM changer ...
1
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0answers
516 views

Shapely : cascaded_union seems to return too many polygons

I'm trying to get the union of around 4,000 polygons using Shapely's cascaded_union function. The output of this function is a multipolygon in my case, which is normal since many input polygons do not ...
1
vote
1answer
357 views

Deprecation warning when importing Processing in pyQGIS 3

I use QGIS 3.4 with Python 3.7 and I have a warning message when importing Processing like this : import processing from processing.core.Processing import Processing Here is the message : Using or ...
1
vote
1answer
197 views

Setting selection border color in red and save the map of the resulting selection

I'm attempting to create a plugin in QGIS 3 in order to zoom on a selected feature and get the map picture exported in .jpg format. I've been able to perform the zoom and selection of my selection, ...
1
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2answers
2k views

Create Polygon with Length, Width, and a center coordinate

Using Shapely or like library, How can I create a rectangular polygon with known Length, Width (in meters)(Drawing over EPSG: 3857), and center coordinates (EPSG: 4326)? The output needs to be in ...
1
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0answers
82 views

How to set project CRS with plugin (sqlite layer)?

I'm loading a sqlite db into the current project of qgis with a plugin. The standard CRS is EPSG:4326, however i want the canvas to be set at EPSG:3857. When running one of the 2 codes in the console,...
2
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0answers
3k views

How to prevent “Type error: unhashable type” while writing properties with Fiona?

Using shapely's dissolve method I created new geometries from two existing shapefiles. Now I would like to save those new geometries and their properties with Fiona. I have tried to write the ...
0
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1answer
597 views

Getting “Cannot zoom to selected feature(s) : No extent could be determined” from PyQGIS

I am using QGIS 3.4.4. I am trying to zoom on a specific place of my map using PyQGIS In order to do so I've defined the layer I wanted to get the features : couche_parcelles = QgsProject.instance()...
2
votes
1answer
705 views

Getting GRASS 7.4.4 Working in Python 3

I'm trying to get some GRASS functionality in a Python Script, specification r.series, but I'm struggling to import GRASS. I'm trying to uses the method outline on the GRASS Wiki, Working with GRASS ...
1
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0answers
313 views

Rasterizing shapefile with rasterio and gdal gives all cells 0 values [closed]

I am trying to rasterize my shapefile (20 polygons) with rasterio and fiona and turn the new raster into a mask for clipping. I need to rasterize my all polygons in my shapefile and turn on mask ...
0
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0answers
42 views

Get a column from database and populate the shapefile attributes?

I would like to know how to get copy a specific columns from the database and add that column in a shapefile attribute table? I am open to other better ideas.
2
votes
1answer
198 views

Assigning function to a key in QGIS Plugin

I have trouble assigning function to a hotkey in my plugin. I have a class that does things with a mouse click. I'd like to assign another function to a keyboard key or sequence. I've tried two ...
2
votes
1answer
232 views

Understanding QgsLayoutItemLegend of PyQGIS?

As I get more into QGIS scripting, I refer to the documentation often and usually without success. I have trouble deciphering how to interpret the classes, etc. I found this thread which is really ...
1
vote
1answer
123 views

Plugin that selects closest point features from a mouse click

I'm trying to build a plugin that would select let's say 8 closest points from a mouse click. I've found a working plugin that selects the closest feature from a mouse click here: https://www....
2
votes
1answer
1k views

Getting error while importing GeoPandas in Python console

I have installed GeoPandas and its dependencies using pip install package_name. Here is the pip list output: Package Version attrs 18.2.0 Click 7.0 click-plugins 1....