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Geographic Information Systems : Recent Questions and Answers (Page 505)

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

Why are my circles plotted on maps, using buffer data from GeoPandas, not the same size as if I plot on Google Earth?

I am using GeoPandas and matplotlib to plot some circles of desired radius around a set of points.I find that the circles are not the right size on the...

Asked on 12/04/2020

1 answer

gdalwrap incorrectly re-project wide angle

I'm trying to re-project Meteor-M 2 satellite image with gdalwrap. I have GCP points which I put into .vrt file:<VRTDataset rasterXSize="1568" rasterYSize="480"> <GCPList Projection="EPSG:4326"> <GCP...

Asked on 12/04/2020 by Andrey Rodionov

1 answer

Selecting only features with multiple parts in QGIS 3.14

I have a multipart polygon layer that resides on a PostGIS server. The layer is a parcel map, with each parcel having a single unique PIN. Most of the features...

Asked on 12/04/2020 by celeryfarmer

1 answer

r.to.vect is not responding in QGIS GRASS

NLCD data entered for half of Illinois, all of Michigan and Wisconsin, plus additional along borders. Used r.neighbors to simplify, then r.to.vect with "smooth corners" feature selected. Got one warningConcurrent...

Asked on 12/04/2020 by Fiddlerman

0 answer

QGIS2web struggling with labelling

I want to offset my label appearing in the interactive map generated by QGIS2web plugin. Unfortunately the variables offsetX and offsetY don't work... var size = 0; var placement...

Asked on 12/04/2020

0 answer

Display R2 in GEE chart

I have created scatter plot in GEE but for some reason it doesn't display the R2 and the way the linear regression displayd is also not good: ...

Asked on 12/04/2020

1 answer

Making a screenshot from QGIS2web Openlayers map

I would like to make a screenshot from my Openlayers map My code so far looks like this: <div id="map"> <div id="screenshot"> ...

Asked on 12/04/2020

0 answer

Getting province and city name of given point

OpenStreetMap has many shapefiles for downloading, and with shp2pgsql we can import it to PostGISshp2pgsql -s SRID SHAPEFILE.shp SCHEMA.TABLE | psql -h HOST -d DATABASE -U USERHow can I get...

Asked on 12/04/2020 by WebMaster

0 answer

Convert a list to string in QGIS

I have edited a field into the attribute form of a QGIS project as a "Value Relation" to create a checkbox where I can choose few possibilities. I have a...

Asked on 12/04/2020 by Serggg182

1 answer

R Shiny Openstreetmaps - lock map within a set of upper and lower bounds

I am using Openstreetmaps with R/Shiny. I am trying to restrict map display to a given range of coordinates, i.e.xmin, ymin, xmax, ymax so that the users of the map...

Asked on 12/04/2020 by Elías De La Rosa

1 answer

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