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5 views

Stastistical Graph Dashboard on GeoServer

I have created a Web application on GeoServer. I need to represent statistical information of layer ( Distribution & Pie chart ) on web application in direction for team output daywise. I don't ...
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0answers
4 views

How to check for Selection in Geoprocessing Widget WebApp builder?

I published a gp tool and used the out-of-box geoprocessing widget. When a user selects a layer to be processed, the gp process will call the FeatureService(FS) x number of times to get all the ...
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0answers
6 views

AttributeError: 'NoneType' object has no attribute 'symbolLayer'

AttributeError: 'NoneType' object has no attribute 'symbolLayer' Traceback (most recent call last): File "C:/Users/jpilbeam/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\qgis2web\...
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0answers
4 views

Masking out focal filter window around specific pixel

Objective: Using a population raster (100m res), determine the location and number of health facilities needed for 80% of the total population to be within 2 km of a health facility. Process: ...
1
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1answer
9 views

Classify LAS points based on shapefile

I am using R and the current 3x version of the lidR package to process point clouds. Sections of my point cloud are 'unclassified' and I need them to be classified as 'ground'. (These mis-...
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0answers
10 views

Using QGIS with GDAL installed conda on Mac OSX

I used conda to install GDAL in a virtual environment in OSX 10.15 (Catalina). I have no problem running the GDAL scripts in terminal (such as gdal_translate, gdalwarp, etc). I also installed QGIS (3....
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0answers
7 views

How to create a condition for mosaicing images in Google Earth Engine?

I am trying to create a mosaic of a several classified images using as criteria that every pixel has to be the same class at least for three images. A similar process can be done using the .min() or ....
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0answers
15 views

What is the best practice for getting LAZ info in a performant way with PDAL?

I can do this: import json import subprocess as sp laz_file = somefile.laz r = (sp.run(['pdal', 'info', laz_file], stderr=sp.PIPE, stdout=sp.PIPE)) json_info = json.loads(r.stdout.decode()) and ...
2
votes
1answer
29 views

exportToPdf doesn't export the layout in QGIS 3

I have a trouble exporting a print layout in QGIS 3.10 to PDF when doing it programatically. I've created a project with print layout manually and now just want to modify the content of the map with ...
1
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1answer
16 views

Zonal histogram processing and invalid geometries

In QGIS 3.4, when I try to get a zonal histogram it returns an error related to invalid geometries in the vetor layer. I had already set "Invalid features filtering" to "Do not filter&...
0
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1answer
53 views

QGIS Processing Plugin Generating Features with Attributes

I'm writing a QGIS processing plugin that creates a point feature layer. I'm able to add points to the feature layer just fine but the attributes I add don't show up in the Attribute Table after I run ...
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0answers
9 views

ArcGIS .Net SDK publish shapefile to ArcGIS Online

I am quite new with ArcGIS Online and their .Net SDK. I am trying to load shapefile into my ArcGIS online account using .Net SDK. On the ESRI tutorial portal, there is 0 information about it, all is ...
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2answers
18 views

How to define areas from certain NDVI values in QGIS

I downloaded LANDSAT images from 1985-2018 with Google Engine, 2 for each year. Now I want to know how has the vegetation varied over the years with NDVI, using QGis 3.6.3. Having calculated the index ...
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1answer
22 views

How to correlate NDVI and Land Surface Temperature in QGIS?

I'm looking for ways to correlate the NDVI values and the land surface temperature values that I have on QGIS. I'm kind of new at using these kinds of programs. I'm working on a thesis and for my ...
0
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0answers
9 views

Circle radius in r.neighbors in QGIS

I'm trying to calculate relative relief from a raster in QGIS and I have troubles with square kilometer's cirle radius in r.neighbor. In ArcMap it's done with Focal statistics - circular - map units (...
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0answers
10 views

ArcGIS for JS API 4: popup not working following feature query

I'm creating a web map based on this example: https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=tasks-query Except I've modified it so that the drop-down list is ...
0
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0answers
11 views

How to Access/Write to a Shapefile in S3 Bucket using BOTO3 and GDAL

I'm trying to access and make edits to a shapefile that's located in a zip on an S3 bucket. So far I've used /vsizip/vsis3/ to access the zip file that the shapefile in question came in. I've made the ...
2
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0answers
21 views

ogr2ogr creates too many columns with LEFT JOIN

I am creating a GeoPackage using several Shapefiles thanks to ogr2ogr (GDAL 2.2.4): ogr2ogr -f GPKG /path/to/out.gpkg -append -nln out -a_srs EPSG:4326 /path/to/in1.shp ogr2ogr -f GPKG /path/to/out....
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0answers
10 views

Simplifying a polygon, result must contain original

I have some high-res polygons, without enclaves or exclaves that I want to simplify or smooth without loosing any part of the original. Using NettopologySuite I could do polygon.Buffer(x) and then ...
0
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0answers
15 views

Merging/unifying polygons from same layer when boundaries are touching using ArcGIS Desktop

I have a big layer full of polygons. The ones that are separated, are individualized. However, I want to join the ones that have their boundaries touching each other (look at the image). For example, ...
0
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0answers
18 views

No download Option

I am using Modis-13A2 in USGS earth Explorer but I am unable to download its GeoTIFF file because download option is not available kindly guide me. ]1
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3answers
19 views

Drawing points in layer given its coordinates using PyQGIS

I want to draw points in a certain polygon layer. Specifically, I want to display the centroid over each respective feature. All this using PyQGIS. So far, none of the answers I found helped me. I am ...
0
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0answers
13 views

Intersecting Floating Points within a value range to parcel boundary

I have an NDVI with values of -0.99 to 0.88. The raster is floating points with no attribute table. I also have farms as parcel polygons. Using ArcMap or ArcGIS Pro, how can I intersect only the ...
1
vote
1answer
15 views

How to set initial basemap in web appbuilter developer edition?

I wan to set a basemap in my basemap gallery. This is my web appbuilder developer edition configuration file. { "theme": { "name": "LaunchpadTheme", "...
0
votes
1answer
38 views

Aggregate data from several polygons into one in QGIS

I am using QGIS 3.10.1, and I am trying to aggregate Census data (polygons) according to another set of polygons (neighbourhood areas that I have drawn). While I am able to clip the Census data to ...
0
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0answers
16 views

Import ArcGIS Pro Map styles to QGIS

I will have to switch from ArcGIS Pro to QGIS because my uni license runs out soon. Do you know how I can import my map styles from ArcGIS Pro to a QGIS project? I only know how to do it in ArcMap ...
0
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0answers
9 views

Population data at OpenRouteService QGIS Plugin

Does anyone have any experience of how reliable the accessibility analysis and the number of inhabitants in the catchment areas are for German cities?
0
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0answers
14 views

No image exported from GEE ImageCollection to Cloud Storage

I am attempting to export an ImageCollection from Google Earth Engine to Cloud Storage using python API. I work in Atom text editor using Hydrogen, which relies on Jupyter. My workstation runs Ubuntu ...
1
vote
0answers
26 views

Determine if a great circle is on the left or right from a point defined by latitude, longitude and bearing

Given A point coordinate on the map specified by latitude and longitude. Shown as "C" on pictures below. Direction where this point is moving, specified by bearing in degrees (0-359), where ...
2
votes
1answer
34 views

PostGIS check if multiline string is included in polygon

I want to return all records that the multiline-string is included in the polygon. In the photo below, it should return two records. Green line (streets) is contained inside two neighbourhoods (white ...
0
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0answers
24 views

Create a new shapelayer - how to delete a wrong node QGIS 3.14

I want to draw a polygon in a new shapelayer. Sometimes I draw a wrong node and I cannot delete it. I have to delete the whole layer and must start again. I wonder if there is a shortcut or something ...
1
vote
2answers
19 views

Authentication methods missing when connecting to ArcGIS FeatureSevice in QGIS 3.14 (Pi)

I am trying to connect to an ArcGIS-10.3 FeatureService in QGIS 3.14 (Pi) recently installed. In the connection details window, I have the URL but in the "Authentication" part, in "...
2
votes
0answers
27 views

Multiple Text rows in QGIS divided by lines

My Problem seems rather simple but I had no sucess for over a day now. Basically I have multiple (polygon) shape files that need text information in them (or if the shape is to small outside of it ...
1
vote
0answers
22 views

Overlaying points on map in PyQGIS [closed]

I have added google map with PyQt5 and PyQGIS and I want to overlay points and images on map(specifically in python code) but I don't know how to do that. I am using PyQt5 and QGIS3. import sys from ...
0
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0answers
24 views

Validating coordinates are within bounds of a spatial reference system

Given a geometry and a projection, how can I verify that all the coordinates in a geometry (Point, Polygon, ...) are within the bounds of the projection? (For example, WGS84 Bounds: -180.0000, -90....
2
votes
0answers
25 views

No transform available between EPSG:2100 and Unknown CRS

After upgrading from 3.04 to 3.10 my QGIS projects keep reporting "No transform available between EPSG:2100 and Unknown CRS" although the project settings dictate that EPSG:2100 should be ...
0
votes
1answer
32 views

Error appending data to existing PostgreSQL database for OSM with osm2pgsql

When running osm2psql on an existing database I get an error osm2pgsql -v -d gis -a -s -G --flat-nodes ./nodes.cache --number-processes 8 ./thailand.osm.pbf Output is : Allocating memory for dense ...
0
votes
1answer
20 views

Overpass API JSON output cannot be read by QGIS

My steps: 1.) Query Overpass API and download the JSON output by this URL https://www.overpass-api.de/api/interpreter?data=[out:json];node[route=bus];way[route=bus];relation[route=bus](52.5,13.3,52.5,...
1
vote
1answer
43 views

Converting text field to date field in ArcGIS Pro

How to convert date, which is in text formated field to date formated field? Also, there is dates which have only year, without days and months and empty fields, years with months and etc. I've tried ...
0
votes
0answers
19 views

Opening an ArcGIS .jgwx / jpg.aux georeferenced map with QGIS

I got an old map that I have to work with for my thesis and are running out of time. The map is georeferenced and I got it sent as two files - a jgwx file and a jpg.aux file. Is there a way to load ...
1
vote
1answer
20 views

Create lines of based on same ID points

I have an excel file containing coordinates of taxi positions which I would like to turn into lines in QGIS. The example data are as follows no trj_id lat lng 1 10162 -6.32044 ...
-1
votes
0answers
31 views

PyQGIS script works on one computer but not on another newly installed?

The script below works perfectly fine on my computer. But when running the script on another computer, I receive an error: Traceback (most recent call last): File "C:\PROGRA~1\QGIS3~1.10\apps\...
0
votes
0answers
16 views

Multipart multipatch to singlepart multipatches [closed]

I have a multipatch (building 53) which is comprised of buildings which are logically a singlepart. I am using ArcGIS Pro, the multipatches are generated from Terrasolid, which means that the ...
1
vote
0answers
30 views

Commit error when splitting several polygons with “array type” attribute (PostGIS / QGIS)

I have a simple PostGIS table : CREATE TABLE public.elem_p ( gid integer NOT NULL DEFAULT nextval('elem_p_gid_seq'::regclass), liste character varying[] COLLATE pg_catalog."default" ...
0
votes
0answers
16 views

How to use ol-geocoder for custom input box? [closed]

I'm creating an application where I have a form for user registration, I want to use ol-geocoder for user to type their address and then get the lat,lon from that. I checked their github repo, I can ...
1
vote
1answer
61 views

Problems with loading Plugins (processing and other plugins)

I have the following python errors when starting the QGIS 3.14: 2020-10-21T09:21:57 CRITICAL Traceback (most recent call last): File "C:\OSGEO4~1\apps\Python37\lib\site-packages\osgeo\osr.py&...
-1
votes
1answer
33 views

Create one TIFF from several images [closed]

I have dataset with images Example image: All images have GPS coordinates. I need to stich this images in one TIFF using Python.
1
vote
1answer
13 views

Problems with features on ImageStatic source

I am trying to draw a grid on top of an ImageStatic source in OpenLayers but I am getting extra grid squares on the right side of my image. Why do rows 2 & 3 have 5 columns instead of 4? https://...
0
votes
0answers
16 views

Shifting/rescaling/standardizing coordinate system in spatial lines data frame using R

I have a spatial lines data frame object extent: 143516.4, 213981, 3353367, 3399153 (xmin, xmax, ymin, ymax) I want to standardize x and y coordinates and create the same spatial lines data frame ...
1
vote
0answers
22 views

Raster Calculator for DEM Resolution

I am trying to perform a raster calculation of a DEM and I would like it to have any desired resolution of my choice. How can I write the code so that I adjust the pixel height and width in feet using ...

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