Use this tag when referring to georeferenced or ungeoreferenced TIFF (Tagged Image File Format) files.
4
votes
1answer
25 views
QGIS rendering TIFF color with wrong color
When I try to display a GeoTIFF image with single band pseudocolor, the style seems to be wrong for values out of the range 255.
The legend is shown as
The green pixels have a value larger than 255....
1
vote
1answer
26 views
How to find if a pixel is entirely within another pixel when comparing for example two GeoTIFF raster maps? [on hold]
Using GDAL and/or Python
Red: GeoTIFF raster Map layer 1
Blue: GeoTIFF raster Map layer 2
2
votes
1answer
53 views
How to obtain TIFF file using data from CSV files
I have a set of CSV files containing lat-long values for certain land cover classes.
Long Lat
80.1 23.0
80.2 23.1
80.3 23.2
80.4 23.3
...
From this point on, I need to generate a TIFF file ...
1
vote
0answers
21 views
rasterio & cogeo
I am trying to use rasterio to read cloud-optimized geotiff stored in a gc bucket.
With method 1, GDAL makes use of the overviews and read is quick. Unfortunately, if the extent is not fully included ...
0
votes
1answer
48 views
Pix4D and ODM generated tiff with same source images don't align
I have created two georeferenced orthomosaics using dronemade images. I used OpenDroneMap and Pix4D for that and I used the same source images for both.
I thought that if I used the same images, the ...
1
vote
2answers
55 views
Getting RGB values of each pixel in a LANDSAT 8 GeoTIFF with Python 3
I'm working with a set of LANDSAT 8 Collection 1 Tier 1 GeoTIFFS pulled from Google Earth Engine, and I need to find the RGB values of every pixel in this GeoTIFF.
I've tried using the code from ...
0
votes
1answer
28 views
Changing land use land cover classes in ArcGIS Desktop?
I have a tiff file containing raster data of land use land cover (LULC) classes.
Each pixel has a pixel value in the form of RGB values of the corresponding LULC class, need to change the pixel ...
1
vote
0answers
32 views
Using GDAL tools to convert GeoTIFF for Mapbox use
(Edit) I have added a link to the files needed to reproduce problem (unzips to 180MB TIFF) :
https://www.dropbox.com/s/qrrlsjlmafctt38/issue.zip?dl=0
I have been working on a project the past few ...
1
vote
1answer
44 views
Exporting GeoTIFFs from QGIS [closed]
I would like to export my map as a GeoTIFF in QGIS. My workflow is as follows: Project - Import/export - export map to image…
I have two questions about this: instead of saving the image as a GeoTIFF,...
1
vote
1answer
31 views
Transforming a single-band GeoTIFF into an RGBA PNG file using GeoTools
I'm fairly new with GeoTools.
I'm using it in order to generate GeoTIFF files that have a single band, with values between -1 and 1, or NaN.
An example of such a file is available here: https://m-...
0
votes
1answer
45 views
Import multi-band TIFF in R
I am trying to import a TIFF file that contains 2 bands. When using the following code in R, it seems only the first band is being recognised.
S1<-"my/path/"
S1<-list.files(S1, full.names = ...
1
vote
0answers
21 views
Clip raster along grid in ArcGIS?
I have a topographic map of Washington as a TIFF-file from the US Geological Survey. And I'd like to clip the raster to the extent of the outer grid lines (78E/39N, 76E/39N, 76E/40N, 78E/38N). So that ...
0
votes
2answers
88 views
How to obtain DN values of Sentinel 1 Data (preferably GRD) given actual location coordinates using Python3 GDAL/rasterio/any_other_library?
location of Svalbard
77.8750° N, 20.9752° E
I have sentinel-1 microwave data (in GRD FORMAT) downloaded from Copernicus. Each image is HH or HV polarized.
How do I calculate the DN value from ...
0
votes
1answer
36 views
Black box around raster layer retreieved from Mapbox in ArcGIS online
I manage a mapping system for the Pine Ridge Reservation in South Dakota and am trying to retrieve a raster layer but I keep getting this expanding black background/box.
When I open the mbtiles file ...
1
vote
1answer
21 views
gdalwarp: differentiate between empty-in-source and outside-of-cutline?
I'm using gdalwarp to clip a polygon out of a map layer using --crop_to_cutline.
The original map layer has a lot of empty pixels (well, transparent / alpha=0, to be precise). As it stands, my output ...
0
votes
0answers
18 views
Waiting for tif processing to read it
I'm writing a script where many little tif-files are generated, then converted to vrt and merged to a tif to finish. Here is the code:
rasters = glob.glob('/{0}/ndvi_clip/{1}*.tiff'.format(path, ...
-1
votes
0answers
24 views
What is the file format of the GeoTIFF file provided by Sentinel-1A?
The SLC files have I and Q values which can be picked up and squared to get amplitude of the pixel.
The GRD files's each pixel is an amplitude value.
I did the following activity once. Opened an SLC ...
2
votes
1answer
52 views
GDAL reprojection 4326 to 3857 creates gap
I have an EPSG:4326 tif covering the world that I need to reproject to EPSG:3857 in order to use it with Mapnik to create a map.
When displaying the original tif and leaving Mapnik doing the ...
0
votes
0answers
14 views
how to remove black border pixels of georeferenced image without affecting interior pixels using GDAL python [duplicate]
I'm trying to remove the black border from the Geotiff image. The problem is that the value of the pixel border (0) also exists inside the image
i tried this but it doesn't work
Removing black ...
1
vote
0answers
43 views
QGIS - Lookup elevation or slope from geoTIFF from a series of lat/lon values
I have a geoTIFF file (pretty large) covering a good chunk of Spain around Almeria. I got it from the EU-DEM v1.1 data (25m resolution), freely available in which I have a route in lat/long and I want ...
0
votes
0answers
9 views
gdal tranparent doesnt work
i trying to create another geotiff file with another arrays, cols and rows like an first tiff, it doesnt matter, i got a problem with transparency, the 4 band is alpha and i set it to 0, but it ...
0
votes
1answer
26 views
Cutting rasters using polygon and obtaining pixel specific data using ArcMap
I have a georeferenced polygon file that I want to use to cut several different raster files. I am looking to analyse the individual pixels within those cut areas.
One of the raster files has a ...
-1
votes
1answer
19 views
Setting no-data for area outside of clip polygon with ArcGIS Desktop?
I need to clip black and white landuse plans which are in TIF format from a graphic in ArcGIS Desktop 10.3. or higher. The resulting black and white images should ideally be in TIF format also. The ...
3
votes
1answer
50 views
Determine size of GeoTIFF header
Is there a way to find the size (in bytes) of the header information in a GeoTIFF file using Python? I am not trying to read the header (I know I can use gdalinfo for this) but rather to figure out ...
1
vote
0answers
28 views
QGIS: can I somehow display a virtual raster of 7000 zipped GeoTiffs?
I've built a virtual raster of 7000 zipped geotiffs (each about 3600x2400 px). The GeoTIFFs have overviews.
I've tried to open it with QGIS desktop application (via Add Raster Layer).
Alas, QGIS ...
0
votes
1answer
33 views
Extracted GeoJSON from TIFF
If there are a way to do
call("gdal_contour -i 10 -f GeoJSON".split(' ') + [file1, file2])
as Python call method of some library? Not via command line call and intermediate file storing?
1
vote
1answer
31 views
gdal_translate and gdalwarp do not close when converting an ecw file to GeoTIFF
I'm trying to convert a portion of a fairly large ECW file to a GeoTIFF using either gdal_translate or gdalwarp. The problem I'm having is that the GeoTIFF is generated but gdal_translate and ...
2
votes
1answer
34 views
How to check if a GeoTiff has pyramids?
I've just saved a GeoTiff image via GDAL (C++ version). I've called BuildOverviews on it. How can I check if the pyramids are actually created in the image?
2
votes
1answer
85 views
Efficiently read large tif raster to a numpy array with GDAL?
I have been using the Python GDAL API to read tif raster files as NumPy arrays. Previously, I simply read the raster into an array directly with GDAL:
ds = gdal.Open('example.tif')
fullarray = np....
0
votes
0answers
16 views
Get diff for 2 geo TIFF
If there are some straightforward solution for calculating border polylines for resulted diff area of 2 geoTIFF files. So basically:
1. Calculate new geoTIFF as result of 2 geoTIFFs
2. Extract ...
0
votes
0answers
8 views
how to publish multiple .tiff images in geoserver? [duplicate]
I am using geoserver 2.9.0 and have multiple .tiff images i need to publish.the default geotiff plugin would only publish one tiff image.I would like to know which plugin extension support multiple ....
1
vote
1answer
89 views
How to extract values from .tiff file using R?
Maybe a rather simple question, but I could not find an answer. I am trying to extract long, lat, value from a .tiff file of a map of Africa with long/lat and soil acidity as the values.
Here is some ...
0
votes
0answers
39 views
Converting DXF/DWG/landXML to GeoTIFF?
I need to do a converion of surface for a large area from DXF (or landXML) with high resolution (0.3 feet grid spacing). Currently perform this with AutoCAD but it takes too much time (over 7 hours).
...
3
votes
1answer
115 views
Retrieving exif tags from GeoTiff with GDAL?
I work on toolkit that automatically classifies data from a bunch of aerial cameras. Each camera uses geotagging to store position and time metadata in EXIF tags.
When I use GDAL (I use version 2.0....
2
votes
1answer
29 views
How to read part of a TIFF as array and export it with its correct coordinates using GDAL?
I would like to be able to read a part of a TIFF file as a numpy array (using read as array(xoff, yoff, xsize, ysize) and be able to export it again to TIFF file, having this subset its correct ...
1
vote
1answer
51 views
Georeferencing metadata in GeoTIFF files
I am generating maps as TIFFs using the raster package (writeRaster) in R to generate small tiles, then as a final step, combining the tiles via the GDAL script gdal_merge.py.
I thought the resulting ...
1
vote
0answers
22 views
Add compression variable to CopyRaster_management for TIFF Raster Dataset
I need tiff orthos to have NO compression. I'm using a python script to parse through directories and add 4-band data to the images. It works great ... but the customer wants it uncompressed. The ...
0
votes
1answer
19 views
How to get output format JPEG using like source GeoTIFF (int16) in service WCS in Geoserver?
I have GeoTIFF file (int16), and I publish the layer in Geoserver using like store in Geoserver my file, now I used WCS request builder to get JPEG-like output format and I get an error "No possible ...
0
votes
1answer
29 views
Extracting pixels from polygonal geospatial region of set of map tiles and/or set of GeoTIFF files?
I need to create a script, probably JS or Python, to perform the following:
I have a polygonal region -- no "holes", and always fully convex -- for which I need to extract the pixel data from one of ...
0
votes
0answers
34 views
Shapefile with data into Unity?
So far I have imported my GeoTIFF as a height map (raw) into unity.
The simplest solution to getting the road map shapefile on was to set it up as a PNG texture and layer it on. This worked well, BUT ...
2
votes
0answers
54 views
Importing Georaster into BlenderGIS causes blender to not respond
I am trying to load a geotiff of the UK into blender, when I try with smaller files it seems to work.
I am thinking that maybe blender cannot handle the size of this geotiff, is there anyway to stop ...
1
vote
1answer
12 views
Intersecting geotiff with another one using alpha-channel (or nodata value) in GDAL?
I have two geotiffs related to one location but with different areas covered:
1.
2.
How can I intersect their opaque parts into single geotiff like that?
1
vote
1answer
35 views
Interpolation Algorithm with gdal in R
I'm currently having some problem while trying to create a GTiFF file.
require(raster)
require(sp)
require(rgdal)
require(gdalUtils)
library(rgeos)
map <- readOGR ('MyShapefile.shp',layer='...
0
votes
1answer
18 views
Why is ArcMap displaying jpgs and geoTIFFs differently than the raw file? [duplicate]
I have a world jpg file that I am trying to use as a background image in ArcGIS. When I look at the raw jpg through a random picture viewer, it looks like this:
However, when I load the image into ...
1
vote
0answers
22 views
Does anyone know why I'm getting a completely black geotiff as a result of this shapefile cut out of another geotiff in rasterio?
I am using rasterio to cut out the shape of a lake outlined in my shapefile from a geotiff. When using a shapefile of a singular lake with a geotiff, this works perfectly, but not when cutting out a ...
0
votes
1answer
30 views
How to generate bounding boxes for Spacenet tif files using geojson vector data
I have .tif raster files from the SpaceNet dataset, along with corresponding object descriptions in geojson files. I want to be able to generate Darknet style bounding box information ([object_class, ...
1
vote
1answer
60 views
GeoTiff import appears to be flat in BlenderGIS
I an very new to GIS and I am trying to import a GeoTiff file into Blender to view it as a model before importing into unity. For some reason when I import the file into blender as a raw DEM it ...
2
votes
1answer
53 views
Can you draw an actual line instead of a cutline with GDAL?
I'm fairly new to GDAL and I have some GeoTIFF files that I would like to highlight some bodies of water on. I have gotten pretty far, but I have one problem. The only way I am able to highlight a ...
1
vote
1answer
27 views
Trying to convert tiff+tfw to mbtiles. Projection issues?
I have quite a number of huge TIFF files, each TIFF file has a TFW file associated. gdalinfo shows that the TIFF files are not real GeoTIFF (no embedded data). I know the TIFF's are in WGS84, UTM ...
1
vote
0answers
76 views
Which DEM format is efficient .tiff or .hgt
I know this is a vague question, but I've no expertise in GIS world. I was building this terrain map for a game like simulation project that I'm invested in. Data accuracy is least or no concern, but ...
