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Geographic Information Systems : Recent Questions and Answers

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

D8 algorithm to get flow direction in ArcGIS Desktop

I am using ArcGIS 10 for the get the flow direction from DEM. I wonder about the algorithm they have used while calculating flow direction. It is mentioned there that...

Asked on 12/06/2021

2 answer

Join a CSV file to GeoJSON using ogr2ogr in a Python script?

I have a CSV which I would like to join to a GeoJSON. I found this answer which I tried to implement but I can't get it to work...

Asked on 12/06/2021

1 answer

Batch converting NAD83 Z12 to NAD83 Z13

I have a need to to convert a CSV file that was surveyed in NAD83 Zone 12 to NAD83 Zone 13 coordinates, is there an online tool that can do...

Asked on 12/06/2021

1 answer

Highlighting most recent point in time slider playback using ArcMap

I am trying to put together a video where spatial points from an animal are displayed. However, many of these points are on top of other points and it...

Asked on 12/06/2021

1 answer

gdal_calc.py SyntaxError

I tried to use gdal_calc.py to avoid using the manual GUI raster calculator in QGIS. However, I'm not yet familiar with it and having errors with my code:gdal_calc.py -A...

Asked on 12/06/2021

1 answer

FME: How can I use File Copy Writer to periodically copy new data within my project folders to a server?

All I want to do is copy a set of folders (and sub-folders) under a 'Projects' master folder on my laptop to the server. I want to automate this so...

Asked on 12/06/2021

0 answer

Apply formatting of symbols from ArcGIS Pro to ArcMap

I have a layer with about 11,000 points. Each point is tied to a point in another layer. The relationship is more or less a parent/children type, where all children...

Asked on 12/05/2021

0 answer

Creating (x,y) coordinates in .nc from .grib2

I have to use a .nc file as input in a model and such model requires projection_x_coordinate and projection_y_coordinate as variables but I don't have them. Is it possible to...

Asked on 12/05/2021 by vicemagui

1 answer

Export map image in QGIS using a precisely defined area

I have to continuously export map images (of different layers) from QGIS to use them in Photoshop for further processing. Given that Photoshop can't deal with world files, I need...

Asked on 12/05/2021

1 answer

QGIS Python not resampling when using gdal warp reproject

I've got a Python script which, so far, is creating a nice DEM. I need to reproject it and then run a slope analysis on it. For the reprojection part,...

Asked on 12/05/2021

1 answer

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