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Geographic Information Systems : Recent Questions and Answers (Page 543)

Find answers to your questions about Geographic Information Systems or help others by answering their Geographic Information Systems questions.

Online source of polygon nodes for individual newly created zipcodes

When a new zipcode is created it would be very convenient to obtain its polygon nodes from an online source, without having to download a national dataset. Does an online...

Asked on 09/24/2020

0 answer

Publishing a vector layer from GeoServer to use in Mapbox

I have published a vector file in GeoServer 2.15.1. How can I add this layer to Mapbox?The example in doc.geoserver.com works fine but when I use...

Asked on 09/24/2020 by Mohammadhossein

1 answer

Filtering a WMS layer in QGIS Server doesn't accept "IN" operator

I am using OpenLayers to connects to QGIS Server, to serve a WMS layers. I want to filter the WMS layer according to one attribute. I have followed ...

Asked on 09/23/2020 by devfaz

1 answer

PostgreSQL Query which returns geom column as WKT set in function

Given: We are accessing a PostgreSQL DB from a VB NET application. When the query completes the DB rows are delivered in a VB NET DataTable. The Postgre DB geom...

Asked on 09/23/2020 by user9491577

1 answer

GeoTIFF to ENVI GDAL translation causes rotation

I have a GeoTIFF(you can download it here ~16MB) which I want to convert to ENVI raw. I'm using this GDAL command:gdal_translate -ot...

Asked on 09/23/2020 by maaattes

1 answer

Has anybody else experienced having issues opening QGIS or .gqz project files on macs?

I have an old Macbook pro with QGIS 3.10 installed. I have not been able to open any QGIS projects I have saved because of this error -> There is...

Asked on 09/23/2020 by Open Source User 123

1 answer

What bin value does QGIS Histogram uses?

I have some single-band rasters (NDVI) on QGIS, for which I can obtain their distribution histogram by going to Right-click > Properties > Histogram Tab > Compute Histogram. This is...

Asked on 09/22/2020 by DarkCygnus

1 answer

Mosaicing of multitemporal Sentinel-2 images

My aim is to combine several Sentinel-2 Level2A images of the same location/orbit number but at different dates of a year. ...

Asked on 09/21/2020 by xmisx

1 answer

Portion of PDF missing in QGIS Export to PDF

I'm trying to produce a custom sized PDF (841 x 3567mm). The preview in QGIS composer looks fine but when the Export to PDF is completed I'm missing the bottom...

Asked on 09/21/2020 by GrahamDee63

1 answer

CartoDB 2.0 Virtual Machine for AWS/RDS

I'm not a Linux person; I'm finding it very difficult to install CartoDB 2.0 on my virtual machine. I believe there was a V1 AWS VM that was created at...

Asked on 09/20/2020 by geoguru

1 answer

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