Questions tagged [multi-band]
Raster data with more than one band/channel of information. Also known in imagery as multi or hyper spectral.
217
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Colours in GeoTIFFs
Coming from a somewhat "Photoshop" background, I am having trouble understanding how colouring/visualization works in QGIS.
When I import a GeoTIFF I get min and max clip values in the 3 ...
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Reducing features with multiple bands with GEE
I create 100 samples with 10 bands in each samples, than I would like to calculate the mean of value of the bands among the 100 samples.
FeatureCollection.reduceColumns({
reducer: ee.Reducer.mean()...
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Add Rasters to Mosaic Dataset eliminates bands using ArcGIS Pro
I am trying to create a mosaic dataset that can have any MAXAR imagery added to it (i.e. 4 band GeoEye or 8 band WorldView-2). In order to do so, I have created a Mosaic Dataset without specifying the ...
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What could go wrong using gdal_calc to sum pixel values of a multiband raster?
I have a raster, input.tif. I can open it using rasterio and read 3 bands:
import rasterio
with rasterio.open('input.tif') as src:
data1 = src.read(1)
data2 = src.read(2)
data3 = src.read(...
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How to add the bands value from CSV file to Image Collection for Classification
I am currently working with GEDI data and Random Forest Classification in Google Earth Engine. I have a csv file which contains 42 bands and about 3600 points. My aim is to import this csv into GEE ...
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Exporting virtual raster in QGIS
I have multispectral images collected from parrot sequoia. I want to merge all 4 different bands and create a single .tif file. I created the virtual raster layer with all the bands included in that, ...
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2
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Calculate seasonal precipitation and temperature from CRU TS 4.05 in ArcGIS Pro
The Goal: To calculate the average spring (Mar-Apr-May) and summer (Jun-Jul-Aug) precipitation and temperature for a series of specific, discrete locations. These points represent sites (I'm an ...
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Extract a single pixel of data from multiband time series of raster (TIFF) images in Python
I have two folders of .tif files (41 and 49 rasters, respectively). The rasters are multi-band (14) and of the same location (same extent, boundaries, etc), just on different days.
I would like to ...
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No features contain non-null values of in graphy
I want to graph the NDVI series by another classified image, but when I graph it there is a wrong No features contain non-null values of "system:index". Howvever I already set the system:...
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Multiband rasters not displaying properly in ArcMap
I have a multiband raster and have found an issue with its display in ArcMap. It is made from two spatially co-indicent rasters which, when viewed in ArcMap, display as such:
Raster1 and Raster 2 are ...
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Defining non-color channels as ExtraSamples
I run a PYQGIS script to calculate mean and stdev of an area for one specific raster-band.
processing.run('native:zonalstatisticsfb',{ 'COLUMN_PREFIX' : '_', 'INPUT' : '/Users/pugliesipc/Desktop/...
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Approaches to distinguish bare soil from artificial soil in an urban context with Pleiades imagery?
My colleagues and I are trying to improve an existing landcover map by improving the distinction between bare soils and artificial soils (e.g. concrete, asphalt). We need a good detection of bare ...
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Creating CNN model for multi-class image classification using Google Earth Engine
I am trying to build a satellite image classifier CNN using Google Earth Engine.
I have been following this tutorial: https://colab.research.google.com/github/google/earthengine-api/blob/master/python/...
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Dividing reflectance values of Sentinel-2 sets of bands using rasterio
I need to divide the reflectance values of a Sentinel-2 sets of bands. To do this, I have to divide each band by 10000 when I read in the band to write the stack. I have an example of my code snippet ...
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Extracting values from bands in raster where one band has two values using QGIS
I am working with QGIS and have a raster file with two bands. Band one contains two values, event types, and Band 2 contains a date where the amount of a Band one event occurring sums up.
An example ...
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How to polygonize multi-band rasters to vectors with multiple attributes?
I'm using Python, and I usually polygonize rasters using rasterio like in this thread : How to polygonize raster to shapely polygons
However, now face a new problem, I have two rasters with same ...
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159
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How do I create a virtual raster in QGIS combining single-band raster layers and a multi-band raster?
I have a raster with 21 bands. I also have 12 other raster layers with a single band each. I want to create a virtual raster combining the multi-band raster and the single-band raster layers, ...
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129
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Changing the data type for multiband raster file to integer
I have a TIFF file of first day beyond 10 degrees at 2 m height covering the northern part of North America from 2012 to 2020. Each year is stored in a different band. Currently, the data type is ...
- 798
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How to create nodata area in a multiband raster?
I am running QGIS 3.10.11, and I would like to create a nodata area inside a multiband raster.
What I have done so far is:
Create a polygon on the area that I want to be nodata
Clip with GDAL my ...
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How can I create a multiband raster from singleband raster values?
Counter-intuitive to all the other questions about splitting raster bands, I would like to split my single-band raster into a multiband raster stack based on the values given in each pixel (range from ...
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How to calculate LST in ECOSTRESS data?
I have downloaded ECOSTRESS images, but the LST band values are way too high. How do I convert the pixel values to degrees celsius? Someone said they use the TES method to retrieve LST from the five ...
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62
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Multiband raster reclassify
I have a two bands raster. I need to reclassify it following the rules "if band 1 = x and band 2 = y the new value will be 1", "if band 1 = a and band 2 = b the new value will be 2"...
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Extracting spectral signatures from ROI using ENVI5.3
I used ENVI's Band Math functionality for calculating a certain index to find out the dominance of a mineral. The output is one monochrome band as seen below, I really need your help to learn how to ...
user168625
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92
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Band ratio with Euler's number in Google Earth Engine
I've band ratio with exponential equation and Euler's number
band_ratio = (0,0039e)^(2,4952*(B2/B4))
Can anyone write it in Google Earth Engine format?
Or just input the Euler's number?
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Converting ordered image bands to image collection and add/restore time stamp in Google Earth Engine [closed]
I received this collection of ordered multiband images and would like to convert them to a single collection, adding a timestamp (system:time_end and system:time_start):
https://code.earthengine....
2
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1
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313
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Sentinel-2 Multiband thresholding (masking) using Google Earth Engine
I want to extract wheat pixels from the sentinel 2 image in google earth engine. Based on field analysis pixel should satisfy 3 conditions: NDVI value between 0.6 to 0.7, NDWI value between -0.5 to -0....
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136
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Creating composite raster mosaic
I have multiple rasters of the same area and I want to mix them into a composite raster, with each of the said rasters becoming one band of this new image, But the input images are very large and I ...
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Redefine grid cell values of 0 to 365 in multiband raster
I have a multiband raster of the Arctic showing the day of the year on which snow melts. I have grid cell values that equal 0 but they should be 365 as the snow never melts. I have tried to use the ...
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392
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How to set band names of multi-band GeoTIFF asset upon upload to Google Earth Engine
I have created a multi-bands GeoTIFF using xarray in Python following this answer. When I display this raster or open it in QGIS, all the bands are named following the variable they represent:
...
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95
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Converting point vector with many fields to multi-band raster
I have a shapefile of evenly spaced points which I'd like to convert to a raster.
In QGIS, I know I can do this with Raster > Conversion > Rasterize (Vector to Raster).
However, I see the ...
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Python - Calculating Burned Area Index results in empty plot
I've followed this tutorial to calculate the dNBR Index, using the given sample tif files which contain a burned area. My results were as shown on the tutorial. So far so good.
Then I tried to ...
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1
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118
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Calculate raster pixel maximum accross multiple bands
I am using QGIS 3.10 and try to solve the following task. I have a multiband raster (4 bands in total), where each band represents the spatial extent of a tropical storm and the respective pixel value ...
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451
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Extract all band values of a multiband raster to Polygons as separate columns
I am trying to extract the values of a multiband raster to a polygon in R.
ACVheatingdegreedayS <- stack("location/multibandraster.tif")
ACVheatingdegreedayS <- ACVheatingdegreedayS %&...
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Subsetting mutliband raster in QGIS using OTB BandMathX
I am attempting to do a simple extraction of a multiband (360 bands) raster in QGIS. I have come to the conclusion I need to use BandMathX from OTB, since I am interested in generating a new multiband ...
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141
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How data is stored in GeoTIFF [closed]
I'm trying to understand how data is stored in the GeoTIFF format. I understand that the file begins with header, where are stored information
which says that the file is GeoTIFF file. I also know ...
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Imagery Alpha and Mask channels: when should each be used?
Gdal supports both Mask and Alpha channels. In what circumstances are they best applied? How to choose between them?
For example the nearblack utility to change image collar pixels to nodata can use ...
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Using NASA Above landcover imagery in place with Qgis
Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain is composite tiled classified imagery dataset covering the years 1984-2014. The format is elegant and clever but hard to use. Each ...
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Using NASA Above landcover imagery in place with ArcGIS
Landsat-derived Annual Dominant Land Cover Across ABoVE Core Domain is composite tiled classified imagery dataset covering the years 1984-2014. The format is elegant and clever but hard to use. Each ...
- 27.6k
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1
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368
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Merging the bands of a single image in GEE python API
I currently have a single image with 3 bands with different turbidity data, all from the same region. The pixel values of the 3 bands do not overlap with each other. I would like to merge these 3 ...
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161
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How to mosaic/align multispectral georeferenced images into one merged file with GDAL
I am trying to work my head around how to make mosaic from georeferenced multispectral images. Header of those images already contains information about GPS location.
Separate image is saved as *.tif ...
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Converting multiband .nc files using R to upload to Google Earth Engine
I am new to using .nc files and am struggling to get the output I need in GeoTIFF format to upload to GEE.
I have downloaded the 2015 zip file of fire data from the CCI archive here: http://data.ceda....
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328
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Composite bands in ArcGIS Pro and Raster Stack in R produce different multiband raster
I have 8 rasters (GeoTIFF; LANDFIRE layers) that I need to stack into a multiband raster for use with downstream analyses (i.e., within FlamMap). I have a workflow using Python and ArcPy and would ...
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I want to create NDVI of multiple raster using ArcPy
I have multiple raster data which are layer stack. Now I want to create NDVI of each raster data. I am stuck in the code, I developed a script but dose not generate any output.
import arcpy, os
from ...
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1
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171
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Asking for the precise detail of gdal_translate's output .xyz multiband file format (when converting from GRIB)
gdal_translate is able to convert a multidimensional GRIB data file (Copernicus ERA5 reanalysis) with the following command-line command (gdal_translate.exe from 11/2016):
gdal_translate source.grib ...
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446
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Rename bands in a multiband raster in ArcGIS 10.x
I have imported a multiband raster in .tif format into a geodatabase using ArcGIS 10.7 and want to rename the bands to something more descriptive. However, I can't find out how to do this easily.
Does ...
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Band Compositing
This is probably a trivial question, but is it possible to create band composites using bands of different resolutions (10m, and 20m)? I tried that and exported the resulting rasters to JPEG and it ...
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Convert multiband GeoTIFF to dataframe using all bands (R, Python or QGIS) [closed]
I have a GeoTIFF file with 2 bands and I want to create a dataframe like this:
pixelID | band1Value | band2Value
I would like to do it in R, Python or QGIS.
As far as what I have searched, I could ...
- 171
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26
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Set display options for more than one layer in ArcGIS Pro
I am trying to set display options for more than one layer in the ArcGIS Pro software.
The task is to activate 3 raster layers at the same time in order to create a new pseudocolor map with bands.
I ...
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Renaming images of ImageCollection to add band name at end on Google Earth Engine
I am trying to batch download an image collection using Rodrigo E. Principe's tool but I want to download each band seperately by image.select function.
When I download a single band, I get the name ...
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32
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Visualizing True Color Remotely Sensed Images
I am following this tutorial (which is also on GitHub) and I can't seem to understand this line of code:
np.clip(eopatch.data['BANDS'][closest_date_id][..., [2, 1, 0]] * 3.5, 0, 1)
I am guessing ...
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