All Questions
160,449
questions
0
votes
1
answer
37
views
Maximum number of attempts (200) reached - Python Planet API - Order and Download a request
I want to download some data from Planet using its Python API. I follow the following tutorial planet-sdk-for-python-v2.readthedocs.io/en/latest/python/sdk-guide/#create-an-order-request
I have done ...
- 608
0
votes
0
answers
39
views
AttributeError: NoneType
I have this code I use in the QGIS Python console. I used it a few days ago and it worked, but I tried using it again and I got this error:
Traceback (most recent call last):
File "C:\PROGRA~1\...
0
votes
0
answers
33
views
PyQGIS Push selected feature to identification results panel
I have selected feature on vector tile layer loaded from https://cdn.kadastr.live/tiles/maps/kadastr/land_polygons/{z}/{x}/{y}.pbf
How do I make its attributes appear in the identification results ...
- 13
0
votes
1
answer
59
views
Joint feature QGIS 1 a N
I have 3 tables, a linear table of sections, a non geometric table of bus lines, and a intermediate table between both, with relations N:M. In the intermediate table I have the ID of sections table ...
0
votes
0
answers
20
views
Single Sign-On for GeoServer WMS layer request
I'm new to GeoServer, and I've successfully created WMS layers within GeoServer. These layers are currently accessible in my web application using Leaflet. Now, my goal is to enhance the security of ...
0
votes
0
answers
31
views
How to interpret values of elevation standard deviation statistic (and not elevation mean) from DEM
I am trying to interpret the standard deviation of elevation to understand the topographic landform of my study area.
We have 2km*2km grids in the study area for which we extracted certain landscape ...
1
vote
1
answer
44
views
How to change the layout DPI for PDF export in QGIS
I am working with QGIS 3.28.4. I have set the export resolution to 300dpi in the layout properties but when I export the layout as a PDF it gets exported at 72dpi. If I export it as png it gets ...
- 11
2
votes
0
answers
34
views
Fixing gaps in line network with pgRouting/PostGIS
I have a line network that I want to fix the gaps on (connect the edges). I have tried the following:
SELECT pgr_nodeNetwork('migration.streams', 0.0001, 'id', 'geom'); -- fix gaps and dead ends?
...
- 781
0
votes
0
answers
36
views
How to call a specific attribute from a feature
I am trying to store the coordinates of each points as an individual variable. How would I go about doing this?
var randomPoints = ee.FeatureCollection.randomPoints({
region: studyArea,
points: 5,
...
-1
votes
0
answers
14
views
Publish CSS styles in Java with GeoServer [duplicate]
I need to use the REST API method to publish CSS styles to the GeoServer style library and bind them to layers, just like directly publishing SLD styles. However, I have not found a solution.
My ...
- 5
0
votes
0
answers
24
views
Issue in my query to filter for only roads and highways using osmosis/osmfilter in my OSM file?
I wnat to extract all the road types and speed limits from the OSM file for the US. I started with a small subset (Delaware OSM), and I ran the following query to try to get rid of unnecessary ...
0
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0
answers
14
views
Classification function error in Google Earth Engine (GEE) Code [closed]
Error in Google Earth Engine (GEE) Code -
"trainedClassifier.predict is not a function"
I'm working on a classification project in Google Earth Engine (GEE) using a Random Forest classifier. ...
- 1
1
vote
1
answer
56
views
Drawing lat, lon grid over UTM project not working in QGIS 3.32
Goal
I want to draw both an UTM coordinate grid as well as a geographic coordinates grid (lat, lon) on a map in the QGIS print layout window as shown here.
Setup
GeoTIFF layers with tfw files as .zip ...
1
vote
1
answer
18
views
Expected type of geom is integer,smallint or bigint but USER-DEFINED was found
I have tried importing my multilinestring shapefile from both qgis and the shapefile loader into postgis, but it gives me the following error when running the following code:
SELECT pgr_createTopology(...
- 781
0
votes
0
answers
24
views
How to Fix ArcGIS Pro error Cannot get exclusive schema lock. Either being edited or in use by another application or service
I am trying to complete an Add Join between a shapefile and a .csv table in ArcGIS Pro. I downloaded the shapefile from a government website, and I created the CSV with my own data. I want to join ...
0
votes
1
answer
20
views
Add a computed list as a property to each feature of a featurecollection
I'm computing a reducer over a featurecollection using reduceRegions. I would like to add back the computed properties as a "sum" property to each feature of the initial featureCollection.
...
- 2,540
0
votes
0
answers
21
views
Plotted data in Python and plotted data in QGIS is different
I'm currently working with a raster dataset containing U.S. land cover data and a vector dataset containing building footprints within a specific state. When I attempt to plot two buildings that ...
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0
answers
43
views
Choosing coordinate system
I am in an intro to GIS class and one of my projects homework assignments is to make a map of income in both New York City and New York State. One of the key points of the assignment is that we need ...
- 11
0
votes
0
answers
22
views
Per-pixel percentile rank of ee.Image() compared to ee.ImageCollection() using "random" method as tie breaker
I'm trying to figure out how to use Earth Engine to calculate the percentile rank of an observation compared to a vector of observations. I would like to do this per pixel, and I want ties to be ...
- 315
1
vote
1
answer
43
views
Retrieve geometry from GeoJSON to L.polygon in Leaflet?
Since I have a problem with Leaflet draw, which, unfortunately is discontinued, I'm trying to rely on Leaflet editable for editing: before I learn how to save edits, I just want to retrieve a polygon ...
- 486
0
votes
0
answers
7
views
QGIS 3.26 Layer from Image server disappears after panning/zooming
I've connected to an ARCGIS Image server using the ArcGIS ImageServer Connector plugin on QGIS 3.26
As soon as I pan/zoom the image disappears in the viewer and never returns. I've tried using QGIS 3....
- 53
0
votes
0
answers
29
views
Cluster points based on a maximum distance to each cluster's center
I have a layer of buildings (points). I would like cluster as many of them as I can around a common point in space in such a way that all the members of each cluster have a maximum distance of 100 m ...
0
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0
answers
12
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Batch process automatic filling of two columns
I would like to automatically fill two columns in my batch process. Column 3 is to be numbered consecutively with "fid_". Column 5 is to be numbered consecutively with "fid_Mi_". ...
- 1
-1
votes
1
answer
50
views
Reverse geocoding around the whole world using PostGIS [closed]
I need to determine an exact country and city, having geocoordinates on hand (the whole world), I've read tons of information on the internet, but wasn't able to find a solution.
I was thinking about ...
- 101
0
votes
0
answers
54
views
How to use an Excel file (.xlsx) in QGIS
So I have an Excel file where I want to use built in Excel features such as restrict data type in columns etc. but I want to use QGIS to display the data.
I know that I can change it to a CSV file ...
- 1,984
0
votes
0
answers
14
views
Methods in Google Earth Engine to correct the impact of sunlight on water bodies
There are very high reflectivity water bodies on both Landsat and Sentinel satellites, which is very troublesome when retrieving water quality parameters. Are there any simple and effective methods to ...
1
vote
0
answers
19
views
How to call WFS from a WPS in GeoServer
I have a custom WPS process, and from that, I need to call WFS to insert Transaction request, because I don't want to make two requests. I tried looking into GeoServer transaction test code but was ...
- 39
0
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0
answers
32
views
Clipping raster using vector layer in GeoServer
I am trying to clip a raster layer using boundaries from a vector layer. I have tried using WPS chaining to do it. I have used gs:cropcoverage as input process for the raster and gs:collectgeometries ...
0
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0
answers
29
views
Formula to plot relatively small map from WGS84 data [closed]
I am looking for a formula to calculate the x and y coordinates on a flat 2D map for a given pair of WGS84 latitude/longitude values and a given pair of coordinates that specify the center of the map:
...
- 113
0
votes
0
answers
14
views
Issue converting .ply to LAS then LAS to COPC , losing colour information
Using PDAL to convert .ply file with colour information to LAS, I can verify I see the colour information in cloud compare.
However, when converting the LAS to COPC , I'm losing the colour information ...
0
votes
0
answers
40
views
Calculation of LST overestimates values
I am trying to retrieve LST from Landsat 8 data, after writing my script, it shows very good results until I estimate the emissivity of my study area, but when I run the following part,
var LST = ...
- 1
0
votes
1
answer
30
views
Raster calculate in Python [closed]
I have a shapefile and raster data. I want to calculate the sum of pixels value of each polygon in my shapefile using Python then save the results to MS Excel.
For example: My shapefile has 100 ...
- 1
0
votes
1
answer
30
views
Extract climate data
I need Qgis to extract climate data informations which are layered into the maps. Moreoever, I got exact geospatial plot-information for all of the plots.
So lets say I got in QGIS a map with 2500 ...
-1
votes
0
answers
16
views
GEE DeepLearning [closed]
I am a graduate student, and my research direction is deep learning to extract floods.
How to use GEE for deep learning to extract flood information?
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1
vote
0
answers
38
views
Calculate kinematic data within a PostGIS trajectory [closed]
I have a number of glider flight tracks recorded in GPX format and I would like to extract kinematic data such as instantaneous vertical velocity for charting and further analysis.
There's plenty of ...
- 305
0
votes
1
answer
36
views
Selecting point/feature in layer using coordinates [closed]
I want to select a feature using my own coordinates.
Is that possible in PyQGIS?
I mean i enter my own coordinates and the program should select the feature at that specific coordinate if there's an ...
- 1
0
votes
0
answers
15
views
Giving different attributes to different polygons symbols in the same shape layer in ArcGIS Pro
I have several polygons in the same shapefile with the same symbology. I'd like to change the symbology of some polygons in ArcGIS Pro. How do I do that?
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-1
votes
0
answers
25
views
Publishing CSS styles to geoserver in Java is not an SLD [duplicate]
I want to directly upload and publish a CSS format style in Java, but after trying for a while, it has failed.I don't want to manually convert it to SLD format. Has anyone done anything similar or ...
- 5
0
votes
1
answer
34
views
Publishing CSS Styles to Geoserver in Java [closed]
I want to directly upload and publish a CSS format style in Java, but after trying for a while, it has failed.
How can I do this?
- 5
0
votes
0
answers
15
views
Meaning of Greenwich (0.0) on GCS_Clarke_1880 WKID: 4034 Authority: EPSG?
This is similar to question topic GCS_Clarke_1880 transformatiom to GCS_WGS_1984 in ArcGIS 10.3.1.
Question : A reply to topic on line above, included:
GCS_Clarke_1880 WKID: 4034 Authority: EPSG
...
0
votes
1
answer
23
views
Create x1,y1,x2,y2 columns of pgRouting a* algorithm from a GeoJSON/shapefile
I have used pgRouting in PostgresSQL to routing using Dijkstra's algorithm. Now I need to do the same with a* algorithm, The A* algorithm needs x1,y1,x2,y2 values instead of geometry.
How can I ...
- 39
0
votes
0
answers
42
views
Tool to measure latitude, longitude and elevation in high precision in order to create a digital elevation model of my yard
There is an empty piece of land that is sloped and will require landscaping to make level. I want to take lot of point measurements of lat/long/elevation and hoping somehow I can get into in high ...
- 91
0
votes
1
answer
22
views
Making a layer appear and disappear multiple times in temporal controller
I am making an animation with temporal controller and have a simple point layer that should only be present on certain nonconsecutive days. Previously, I was manually replacing the frames after ...
- 41
0
votes
0
answers
22
views
Rasterizer is not working properly
I am working with the following dataset: "https://drive.google.com/drive/folders/1HRUhNwsnxc64KYYQ4GqttbzvUleEl0uI?usp=sharing" . I would like to rasterize the vulnerability data. However, ...
-1
votes
0
answers
16
views
Python opensource project that can convert .3ds into .osgb [closed]
Is it possible to use Python to convert the OSGB into 3DS or from 3DS to OSGB?
- 1
0
votes
1
answer
39
views
Expression to extract from infomation
What is the right expression for the QGIS Field calculator to get value string-field like "new field"?
- 1
0
votes
0
answers
8
views
How we can group the spectral bands of hyperspectral image into subgroups?
The simplest way is to group based on the neighboring wavelength groups in hyperspectral images, as shown in the following image, where there are $G$ different groups and the spectral bands are ...
- 101
0
votes
0
answers
37
views
Export a high resolution image from ArcScene
My 2D output from ArcScene is very pixelated, regardless of the export format I use. I've tried higher DPI, but that doesn't seem to help. I've tried PDF, JPEG, SVG, TIFF, .ai. They're all very ...
- 1
0
votes
1
answer
63
views
QGIS - selecting single polygon highlights multiple polygons [closed]
I have two files,
One file is having GIS information of all the polygons which I want to display in QGIS. The other file contains the source polygon name from first file in one column, and the second ...
- 1
0
votes
1
answer
57
views
Python script run error QGIS
I have been using the Python console in QGIS to develop a script. However, I keep getting the below error whenever I try to execute it.
This is line 43 which has the error
- 11