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Manage file name in a report

QGIS3.22.4 In a shapefile (points), I have a report PDF exported for which I want to give a name consisting of a fix string (let say 'ReportNode') concatenated with the content of an attribute text ...
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  • 438
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0 answers
53 views

Maps not overlapping

I need to Georeference a map which is given in .jpg format. I reference the map using QGIS Georeferencer. The Georeference was successful and coordinate system was saved to WGS 84/UTM Zone 56s EPSG:...
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  • 133
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0 answers
14 views

QGIS 3.26 crash with WCS render type

I am using QGIS 3.26 and it crashes (closes) when, after uploading a WCS link, I try to change the render type in Layer Styling. What could be wrong? I am on Windows x64 and the WCS link is the ...
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  • 1
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0 answers
9 views

Compute confusion matrix using own attribute table in ArcGIS Pro

I have a study area that I defined using polygons (Not using ArcGIS classification types such as supervised pixel based etc). I then went in to the field and collected ground truth data within these ...
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  • 1
1 vote
0 answers
10 views

Merging polygons - Merge feature failed error

I'd like to make the two adjacent polygons become one, I tried to merge the two polygons of Hackney and City of London as below, but just keep getting the error "Merge feature failed" Is ...
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0 answers
12 views

What are the differences between GeoServer, Tileserver and ArcGIS Server

I install Tileserver by the instractions in Switch2OSM website for geting map tiles to frontend website. I need self-hosting tileserver running on company server. Then I read about ArcGIS Server and ...
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0 votes
0 answers
8 views

Masking out areas for a value range

I would like to remove areas which are less than (mean value)*0.8 and the (mean value)*1.2 and would like to keep rest of the data. While trying different things my code became much more complicated ...
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0 votes
0 answers
7 views

Drawing lines between coordinates on Google My Maps

I have coordinates for the 4 corners of a plot of land. Namely: 43.29109, 16.876589 43.290999, 16.876748 43.2909, 16.876674 43.290955, 16.876575 How can I insert these in Google My Maps and draw a ...
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  • 1
-1 votes
1 answer
31 views

Leaflet.routing itinerary search: trying to allow the user to set the profile (car, foot...)

Even though the CSS is not properly compatible (some bugs and stuff not showing properly), I'm trying to use Leaflet routing machine for Openroute service with a key. But I still need to figure out ...
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0 answers
20 views

Application of A* using openrouteservice

I'm new to using GIS and would like to know is it possible to implement an A* algorithm using openrouteservice? I need to find a route between the source and destination that encounters a large number ...
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  • 1
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0 answers
14 views

Distance from Point of interest to multiline [closed]

With Python and shapely, I am trying to find the closest river or lake shore from a given point. I would like to avoid looping through every point of every line to find the closest and need a good ...
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  • 1
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0 answers
13 views

Why this LST code does not give full area coverage?

I am new to GEE. However, I am using the following code for LST measurement. But When I use the code, I see there is Landsat image covering the whole area but the LST layer doesn't get the area ...
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  • 1
0 votes
0 answers
15 views

Listing and counting all points belonging to different classes of choropleth map using ArcGIS Pro [closed]

I have made a choropleth map of COVID-cases in London (by boroughs), and the dots are docking stations (shapefile). Now I want to: Count how many docking stations belong to each class List all of ...
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0 votes
0 answers
20 views

Converting projection in lat lon to pixel x y

I'm looking at a map at https://stephanwagner.me/create-world-map-charts-with-svgmap#svgMapDemoGDP I think it is a Robinson projection but am not sure given that Antarctica is missing. Is there a ...
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  • 101
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0 answers
8 views

Overpass turbo - how to find measurement units?

I downloaded all amenity=parking data for a state in the northeast US as a GeoJSON and JSON from Overpass turbo. When I examine the attributes of the layer, I can see that the field only has the area ...
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0 votes
0 answers
32 views

Sentinel-2 L2A extracted band values different for EarthEngine Sen2Cor vs standalone Sen2Cor

I'm experimenting with a research project comparing Sen2Cor against ACOLITE using band values extracted from lake center points. I've downloaded the latest standalone version of Sen2Cor, used it to ...
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0 votes
1 answer
21 views

Arcpy.CreateTable_management fails in Python toolbox (.pyt)

I am trying to create a table within a Python toolbox (.pyt). This works with file GDB's, but I would like to use a memory dataset if possible. A table can be created in memory manually or by calling ...
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0 votes
0 answers
30 views

Python bulk downloading issue

Here is my code to download the Landsat data. from landsatxplore.api import API import json username = 'username' password = 'password' api = API(username, password) ...
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1 vote
1 answer
19 views

Why do dist2Line and st_nn give slightly different distances?

I have some points and am finding the distance to the nearest state border. My question is: why do dist2Line and st_nn give slightly different answers for the distances? The code below is based on ...
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  • 135
0 votes
0 answers
11 views

ETOPO1 ice sheet GeoTIFF not reprojecting (or appearing for that matter) in Albers conic equal area north Asia [closed]

I am new to and using QGIS for my own amusement. I downloaded the grid ice sheet GeoTIFF from ETOPO1 and want to reproject the file to Albers north Asia conic. But every time I do that the image ...
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1 vote
1 answer
17 views

Showing images of large area in website with thousands of large aerial images hosted on remote server

To be able to use TMS service using GDAL2TIle, one has to make a mosaic of all of images first which is impractical given the fact that there are thousands of aerial images, each 3500x3500px large. Is ...
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3 votes
1 answer
56 views

QGIS minimum bounding geometry expression

I would like to receive the polygon of a convex hull of a group of points in a layer, grouped by its name. Exactly the same result as the "minimum bounding geometry" tool does. This needs to ...
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  • 307
3 votes
1 answer
54 views

hstore_to_map command syntax

I am struggling with the correct hstore_to_map syntax. I extracted power plants from OSM. In the "other tags" field are coal, hydro, solar stated as sources. How do I get/display just the ...
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  • 103
2 votes
0 answers
45 views

Maritime routing considering high detail depth data

I'm looking for ways to find routes between points considering high detail depth data. In the screenshot I presented here the size of the depth polygons can be down to a few square metres. My overall ...
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0 votes
1 answer
17 views

Forming a new layer that is the common area between two other layers on Google Earth Engine

My aim is to find the above-ground biomass of Mangrove forests in specific districts. I was able to map the layers on each other and find the average biomass of the total area but was not able to ...
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  • 13
2 votes
1 answer
75 views

Create line from point to two polygon centroids that meet a condition

This is this is a follow up to this question I have in QGIS ver 3.22 two layers named: source_point_layer target_polygon_layer I want to automatically point with a line from the source_point_layer ...
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  • 307
-1 votes
0 answers
16 views

Multiple Regression in Google Earth Engine [closed]

I want to compute multiple regression in Google Earth Engine by multiple independent parameters (LST, SOIL MOISTUR, Precipitation) an Depended parameter like as NDVI of Modis product. How can do that?
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1 vote
0 answers
19 views

Can shape shapefiles (.shp) be imported into Panoply?

I'm trying to open a shapefile of census-designated boundary (CDB) shapes into Panoply. The application seems to recognize the .shp format, but I nevertheless still get the error: There was an error ...
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  • 113
0 votes
0 answers
7 views

pymongo.errors.OperationFailure: Loop must have at least 3 different vertices

I am trying to do a geospatial query on a Mongo collection. I only have one document in my collection. Here is a brief look at the document: _id: "-100299.874887816__204690.544534077__4004" ...
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3 votes
0 answers
90 views

Improving performance of spatial intersection and aggregation query

Edit: Per a comment, here is some more context and the basics of what I'm looking to do, that I think would better enable someone to offer input from a first principles perspective. Its a lot of ...
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  • 184
1 vote
0 answers
19 views

WKB to feature class in ArcGIS Pro

I have a table in azure databricks called prod.locations that I am connecting to in ArcGIS Pro through an OLE DB Connection\Microsoft OLE DB Provider for ODBC Drivers. This table has a column called ...
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  • 11
0 votes
0 answers
14 views

merging polyline and polygons at image boundaries in WebGIS solutions like GroudWork [closed]

To map a large area in a WebGIS solution in which large aerial images and the corresponding map are hosted on a remote server, images shall be tiled in a pyramid way (using TMS, WMST, COG, ... ...
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1 vote
1 answer
43 views

How to associate point to nearest state boundary outside of the state the point is in

I have a point within a state and I want to find 1) the distance to the nearest state border and 2) the bordering state's name. I am able to do 1). For 2). I am able to get the state name ...
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  • 135
0 votes
0 answers
25 views

QGIS explode takes forever

I'm doing a project on accessibility analysis in Hannover using QGIS 3.26.1 and everything went well. Creating a service area was ok, but when I use the explode function, the loading bar just shows an ...
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-1 votes
0 answers
28 views

Mapping area in website-based solution with GeoTIFF aerial images, showing images with original quality

I am trying to create a digital map of a large area using aerial GeoTIFF images. I don't have a powerful workstation, but I have access to a high-performance remote server. The images are now hosted ...
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1 vote
0 answers
19 views

What is the difference between services.arcgisonline.com and server.arcgisonline.com?

Both URLs appear identical in the list of basemaps available, as well as their visual quality and draw speed. For example, the NatGeo World Map can be accessed either at: https://services....
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  • 7,088
1 vote
2 answers
25 views

Loading and reprojecting .nc file without projection

I am trying to extract some bands from a .nc file. I don't know the file projection (if there is one), thus I created in GRASS GIS a newLocation with no projection (just a XY Cartesian plane) and ...
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0 votes
0 answers
28 views

Why does getFeaturesAtPixel return empty array?

I draw the geojson on the map: const geoJSONFormat = new GeoJSONOl(); const source = new VectorSource({ format: new GeoJSONOl(), features: geoJSONFormat.readFeatures(geojsonObject), ...
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  • 37
0 votes
1 answer
48 views

Get current and average speed - Leaflet

The following code would allow for tracking and giving the speed of a user. I'd like to have this info, and even average speed, but I receive this error: "166:37 Uncaught TypeError: ...
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0 votes
0 answers
24 views

QgsDockWidget content gets "squashed"

I designed QgsDockWidget in QtDesigner and it looks like this: But when the plugin is started all the content gets messed up: What can be the possible reason for such behavior? I set minimumSize ...
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  • 504
0 votes
1 answer
13 views

Why OpenLayers does not render the features collection?

I use this code: const source = new VectorSource({ format: new GeoJSONOl(), strategy: bboxStrategy, }); source.addFeatures(features); const layer = new VectorLayer({ ...
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  • 37
0 votes
1 answer
23 views

I'm confused, where's the string in my Python code when I calculate this field in ArcGIS Pro?

I am trying to give polygons values in a layer based on the sum population within other adjacent polygons. The polygons are adjacent as I have already sorted them through the appropriate field. This ...
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1 vote
0 answers
10 views

Link image position and size to figure's dpi

Is there a method to link image position and size to figure's dpi? With the code below I'm be able to plot a chart. fig = plt.figure(figsize=(10, 10), dpi=100) plt.subplots_adjust(left=0, right=1, top=...
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0 votes
0 answers
26 views

Applying GraduatedColorsRenderer based on classification field values in ArcPy

import arcpy import pandas as pd data = arcpy.ListFields(r"C:\Users\Administrator\Documents\ArcGIS\Projects\Oakville\Oakville.gdb\Etobicoke") path = r"C:\Users\Administrator\Documents\...
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  • 11
1 vote
1 answer
47 views

Concatenate points values in a field of a line

I'd like to know how to concatenate points values (attribute data), using fields calculator of QGIS, putting this concatenation in a new field of the linear feature which connect some points of these. ...
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  • 693
0 votes
0 answers
6 views

Creating map/plan header, which is editable by field list using ArcGIS Pro

I am using ArcGIS Pro 2.9. I'd like to create a plan header on my plan layout with common information. Here a rough example: But now, I don't want to edit the single informations directly in the plan ...
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  • 447
1 vote
0 answers
34 views

Eliminate mismatch between building images and their shape file annotations

I have little experience with geospatial data processing. I have a satellite image of an area (a geotiff file) and building footprints (building annotations) for this area (a shape file). When I open ...
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  • 111
0 votes
1 answer
19 views

Accuracy of LIDAR from XYZ and DEM comparison

I'm taking point cloud xyz's from LIDAR and turning them into DEMs, then comparing that DEM, to a DEM of the original 3D CAD Models to see how well the LIDAR is measuring the model for elevation and ...
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  • 1
0 votes
0 answers
17 views

Natural Neighbour Tool not working - Error not specified in Log

I am attempting to use the Natural Neighbour tool to interpolate polar gridded points. I am using "SAGA Next Gen"'s tool since SAGA is apparently incompatible with QGIS versions after 3.16. ...
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  • 1
0 votes
0 answers
19 views

Appling a raster as a mask to a Landsat composition

I'm a beginner at GE and JavaScript code. I want to apply a mask to a Landsat composition that is already done in the code. I've done the raster upload (that I want to be a mask), which I called "...
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