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Questions tagged [srtm]

13 questions
21
votes
2 answers

Creating Terrain Map with SRTM HGT File

I am working on an iOS application. Where I show the Elevation and Topography map of a certain area. I have managed to download the .hgt file within app from here. So far I am able to extract the Elevation from the hgt file. Now I have to also show…
superGokuN
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7
votes
4 answers

Downloading SRTM data with raster package?

I'm trying to get SRTM data with "raster" package in R, but as soon as I'm choosing SRTM in getData command, I would get the following error: library(raster) srtm <- getData('SRTM', lon=16, lat=48) trying URL…
Haribo
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2
votes
0 answers

How to install dependencies for module elevation (SRTM data)?

I would like to use the module elevation (Python) to download SRTM1 images. I installed the module elevation. But now I have this when I enter eio selfcheck: > u'GNU Make' not found or not usable. > u'unzip' not found or not usable. > u'gunzip' not…
Suge
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1
vote
0 answers

Elevation extraction via 'elevation.clip' fails with 'CalledProcessError' using SRTM1 or SRTM3 in Python

I am trying to extract the elevation data for a country and get an error with this code dem_path = 'data/image_original.tif' output = os.getcwd() + dem_path bounds_combined = combined_polygon.bounds west_c, south_c, east_c, north_c =…
Martin
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1
vote
0 answers

Srtm prints NONE when finding elevations for locations with negative longitude or latitude values

I am trying to use the srtm module in python to get elevation data for my thesis. I am reading the longitude and latitude values from an excel sheet. But in situations where either the longitude or latitude of the date is negative srtm prints out…
tobikasaba
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1
vote
0 answers

Converting SRTM hgt files from WGS84 to another CRS

I'm trying to get slope data from the SRTM (Shuttle Radar Topography Mission) elevation dataset which provides many .hgt files. I've parsed the hgt files to get meters above sea level. When I'm calculating slope in degrees, my data tends to be quite…
Shrey Joshi
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0
votes
0 answers

Merging raster ARC GIS

When I meerge 4 rasters of SRTM rasters into one by the mosaic to raster tool of ARC GIS pro. I get a raster with values from 0 to 250 when the values of original rasters were from -444 to 5034. I tried many option, but every time the same…
Mananou
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0
votes
1 answer

SRTM height reference is unclear

After having some trouble understanding the height reference in SRTM data cropped by elevation Python package, I checked the SRTM guide which states the following: The unit of elevation is meters as referenced to the WGS84/EGM96 geoid I am having…
Sagi Mann
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0
votes
0 answers

Is there a function to download 1s-resolution SRTM data in R?

I have found functions in the geoData package to download 3s and 30s-resolution SRTM data, but there doesn't seem to be a similar function in geoData to get the 1s-res data. Are there obstacles to writing such a function, or is it just that it…
Cyril Mory
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0
votes
1 answer

get elevation of coordinate from srtm dem file in kotlin or java

I want get elevation of point offline in my app I searched a lot but could not find anything for this.How can I do this? We have a dem file and we may get altitude of point with coordinate (latitude and longitude)
freetux
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0
votes
1 answer

How can I cut a dem by longitude and latitude in python gdal?

I am wondering if I can cut a srtm dem data(.tif) into smaller parts in python. We know that we can get longitude and latitude by # importing package from osgeo import gdal # load tiff data dataset=gdal.Open("srtm_input.tif") # transformation…
Zizheng Yang
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0
votes
0 answers

Rounding issue with R, raster, and lat-lon-data

I am importing and exporting ASTER digital elevation models in R using the raster package. These data have a geographic coordinate system, so that the extent of the raster and its cellsize are in degrees. I find that there must be some kind of…
GeVe
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0
votes
0 answers

Error in R package Raster

I am working with R package raster for sometime now. Recently I updated my system to Windows 10 where I used the a backup R package file to install-back all my packages. Now while using raster packages especially when I use: getData('SRTM', lon=…
SamAct
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