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Geographic Information Systems : Recent Questions and Answers (Page 84)

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

Reprojecting GOES-16 data in R

I'm trying to plot GOES-16 data with world boundaries. Data comes from GOES-16 files such as this. Data comes with "GOES-R ABI fixed grid projection" reference system,...

Asked on 08/15/2021 by Ubron Cinzento

1 answer

Date filtered for collection on Google Earth Engine

Is it possible to select from a collection of images for example of 30 years and ask only the image of July for each year? The below only include July...

Asked on 08/15/2021 by Pedro Aparicio

1 answer

Cell size in Mosaic to New Raster versus Resample cell size

I have several TIF 2 meter LIDAR DEM files (100+) that I am merging into a single raster and then creating 4m, 6m, 10m, and 30m DEM raster variants. ...

Asked on 08/15/2021 by tg292

1 answer

Finding centroid of cluster of points using R

While searching the web, solutions for finding centroids of polygons come up rather often. What I'm interested in is finding a centroid of a cluster of points. A weighted mean...

Asked on 08/15/2021 by Roman Luštrik

3 answer

Add a QGIS vectorlayer by geometry type

I wanted to add a GML layer to my QGIS file, but filtered by geometry type. (the file has multiple geometry types in it, with the same layer name, and...

Asked on 08/15/2021

1 answer

How do duplicate script on Google Earth Engine code editor

I'm following https://docs.google.com/document/d/1bRCEB8ybRUp2D6vFc7mjqDMG2bpmCd2iTPQIEern0mk/edit#, its about classification and regression. I followed the regression part then I'll do the classification part. To keep things organized I prefer to...

Asked on 08/15/2021

2 answer

How to create a geometry generator symbol using PyQGIS

I am trying to use PyQGIS to convert a Fill Symbol Layer into a geometry generator Symbol Layer in a rule-based renderer with 300 rules. I am able to iterate...

Asked on 08/15/2021

1 answer

Python function which recognises when to convert coordinate system

How do I write Python code for an AWS lambda function which will convert easting and northings to longitude and latitude? For example, if a CSV is uploaded into an...

Asked on 08/15/2021

2 answer

Raster cell size changing with new projection

I have a high-resolution World View 2 satellite image with a cell size of 0.5 m. However the image is in a WGS84 coordinate system, so to get meter distance...

Asked on 08/15/2021

1 answer

'reportError' in subclass of QgsProcessingFeedback never running

I have two layers, layer_a and layer_b. Both have invalid geometries. When I run a processing tool, it throws an error as expected. Based on the answer posted here...

Asked on 08/15/2021

1 answer

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