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Geographic Information Systems : Recent Questions and Answers (Page 22)

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

Descartes Labs Platform scenes.search within less cloudy periods

Sometimes searching for scenes over a large date range is necessary to obtain cloud-free images, but can be prohibitively slow for satellites with high revisit rates (e.g. Sentinel-2). Is there...

Asked on 11/19/2021

1 answer

Finding distance of line segment considering elevation in QGIS?

Normal distance can be easily computed in QGIS. But how can I do it for a line feature in 3d space, simply saying how to to find the line's distance...

Asked on 11/19/2021

0 answer

Regular-grid-cluster plugin for Leaflet

I am starting with Leaflet and I am trying to use the Regular-grid-cluster plugin with no success. The following code works until the definition of the 'const grid' element. So,...

Asked on 11/19/2021

1 answer

Point values obtained from rasters with different extent, projection and resolution

I am trying to predict a species' distribution. I am fairly new to GIS, so apologies if I am talking nonsense. I gathered various geo-referenced environmental data from different databases....

Asked on 11/19/2021

1 answer

Debugging ImportError: No module named arcpy

I have written a script and am trying to run it in Python IDLE 2.7.6. I first try to import arcpy, but I get an error message saying:ImportError: No module...

Asked on 11/18/2021

7 answer

Selecting every image of collection using Google Earth Engine?

I am currently working on google earth engine and I have created an image collection with 15 images in it. What i want to do is to create an image...

Asked on 11/18/2021

4 answer

Which projection for Yamuna River shapefile covering Uttarakhand, Uttar Pradesh?

I am looking for a common projection for a shapefile of the Yamuna River to cover Uttarakhand, Uttar Pradesh (Allahabad) as I need to calculate an area. How do...

Asked on 11/18/2021

1 answer

Re-Projection of a .sid image file

Does anyone know if I can use ArcMap or ArcCatalog to change the projection of a .sid img without changing it to a .tiff? I have tried the project raster...

Asked on 11/18/2021

1 answer

Opening vector layer via URI with spaces

I try to open a Pelias REST API link that returns GeoJSON with add vector layer (Ctrl+Maj+v) in QGIS. If i try http://localhost:4000/v1/search?text=belgium, it's ok.If i...

Asked on 11/18/2021

1 answer

Display "values" or "description" of Value Map in Attribute Table

I am using a geopackage with a number of tables, some of which I have added in a Value Map to the fields. The value map is to ensure...

Asked on 11/18/2021

1 answer

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