All Questions
61 questions
0
votes
1
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89
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Raster stack does not seem to want to read file
Im trying to put several raster files (.tif) into one stack using the stack function from the raster package. As i do this i run into two errors, namely:
> covStack <- stack(paste0(getwd(),"...
- 3
1
vote
0
answers
215
views
Error in R_nc4_open: No such file or directory
library(terra)
library('sp')
library(raster)
library('gimms','rgdal')
input <- "F:/BaiduSyncdisk/graduatepaper/guaduate/data"
out <- "F:/BaiduSyncdisk/graduatepaper/guaduate/area/...
- 21
0
votes
1
answer
303
views
How to clipe a .tif based on each polygon stored in a shapefile?
I have access to a tif file which contains satellite images of the Netherlands (e.g. https://ns_hwh.fundaments.nl/hwh-ortho/2022/Ortho/1/01/beelden_tif_tegels/2022_079000_449000_RGB_hrl.tif),
and a ...
- 11
0
votes
1
answer
68
views
Is there a way to randomly create points (geo-referenced) in a raster within the area defined by a shapefile? Rstudio
Ok so, this might actually be very straightforward and I apologize in advance.
I am using R for a geospatial analysis. I want to create a series of geo-referenced points which are randomly (but ...
0
votes
1
answer
167
views
What is the best way to use when changing raster DEM resolution from 30m to 500m using R?
I am trying to calculate Elevation, Slope and Aspect using SRTM-DEM in 500m resolution.
The SRTM-DEM coordinate system is in UTM and the resolution is 30m.
How to get the SRTM resolution in 500m and ...
- 13
0
votes
1
answer
228
views
Error calculating area of raster with lat/lon projection
I have a global raster stack (of three rasters) whose pixel values are the percent of a land use for that pixel. Here's the raster metadata:
class : RasterBrick
dimensions : 3600, 7200, 25920000,...
- 43
0
votes
1
answer
393
views
how to extract specific area data from a raster map in R
my_raster.tiff file is the PM2.5 concentration in China in 2013.
I've uploaded the data (my_raster.tiff) to Github (https://github.com/lizhiwei1994/example_data/blob/main/my_raster.tiff) in order to ...
- 1,711
0
votes
1
answer
63
views
Why are there repeated raster data in r
my_raster.tiff file is the PM2.5 concentration in China in 2013.
I've uploaded the data (my_raster.tiff) to Github (https://github.com/lizhiwei1994/example_data/blob/main/my_raster.tiff) in order to ...
- 1,711
0
votes
1
answer
1k
views
Using R to obtain slope raster from DEM GRID raster
After some extensive googling, I wasn't able to find my answer (first time I couldn't surmount the issue by looking at others questions/answers). I am new to asking questions, so forgive any missteps.
...
0
votes
1
answer
408
views
R: "raster" cannot read a GeoTIFF that "readGDAL" is able to read
Question:
I'm working with MODIS GeoTIFFs. I want to use the sf and raster libraries. The file easily opens with rgdal::readGDAL(), which gives me an object of type Large SpatialGridDataFrame. So the ...
- 525
0
votes
2
answers
362
views
R raster function will not accept crs in WKT format
I'm trying to generate a raster and assign it a CRS projection. However, my CRS is in the new WKT format, and the raster() function is requiring me to provide a proj4string. Here's my code so far:
...
- 177
0
votes
1
answer
69
views
How to better write code for extracting raster data in R. Maybe a loop?
I am still getting my feet wet with R. I have an idea to migrate some ArcView functions into R with the following scripts. I would love to be able to have my df help fill in. Would I go about this by ...
- 77
0
votes
1
answer
475
views
Error with CRS argument while reprojecting
I'm trying to iterate multiple rasters (+500) in a for loop but I'm facing some problems.
First I want to reproject them from CRS EPSG:4326 to CRS EPSG: 32614, then resample them by using a mask ...
- 33
1
vote
1
answer
312
views
REST APIs with R Plumber - GIS Shapefiles
I am trying to wrap a function into REST API using plumber R Package. As a Input , function takes a shapefile and returns shapefile in terms of .shp format as well as GeoJSON format after the ...
- 827
0
votes
1
answer
62
views
issue mosaicing images with the same name in R
hello i have 4 folders containing modis images each folder have time series images named the same way e.g:
Folder 1 :
MCD19A2_Optical_Depth_047_2019_032.tif
MCD19A2_Optical_Depth_047_2019_033.tif
...
- 118