Questions tagged [nodata]

"NoData" is a term for null values in raster datasets.

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1answer
31 views

How to check for the nodata cells in a raster image

Please let me know how to check for the locations of nodata cells in raster images in ArcMap. The raster images has no attribute table.
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0answers
13 views

Inconsistent pixel range clipped 16-bit imagery to 8-bit

I'm attempting to convert 16 clipped/georeferenced imagery to 8-bit using the CopyRaster function in ArcPy but I'm having trouble assigning NODATA values. I have 16-bit imagery that has 3/4 bands (...
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0answers
13 views

No Data Value through Pixel Inspector in ArcMap

I have a raster that represents temperature on a global scale derived from satellite data. Initially it had pixels in the ocean assigned -9999. After I used SetNull tool to eliminate them they show up ...
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0answers
23 views

Clip Raster in ArcGIS Desktop 10.3.1 writes NoData border

I'm trying to clip a DEM raster using a rectangular polygon shapefile as the extent. The Clip Raster tool will add/write a NoData border surrounding the output raster. The NoData pixels are ...
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0answers
29 views

Maxent “NO DATA_value” Error

I am trying to run Maxent and I have processed all layers and converted them into .asc files (all layers have the same resolution and extent), there are no 'No Data' areas within the projection extent ...
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0answers
45 views

Determining if Raster and Polygon intersect using ArcPy?

I have a folder of rasters (.tif) and I want to determine which rasters intersect a polygon. The rasters are single band with a value of "1" while the rest of the extent has a no data value (coloured ...
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0answers
24 views

Mapserver NODATA affects valid raster data pixels (zero)

I have NOAA nightlight rasters cropped to country boundaries that I am trying to display using Mapserver. As such, I am trying to have NODATA pixels i.e. those outside the country boundaries be ...
4
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2answers
66 views

QGIS-3 does not recognize “-3.40282e+38” float raster values as NoData

I have DEMs with "-3.40282e+38" values that are supposed to be the NoData values. However, if the rasters are loaded into QGIS (3.4.11), the value can not get assigned with "add additional no data ...
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13 views

Black border around JPEG with world file at diferent zoom levels QGIS

I have noticed in the QGIS view port my georeferenced JPEG with a world file has black edges only above a certain zoom level. I have already specified 0 as the no data value. If I zoom in close to the ...
0
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1answer
27 views

SetNull function problem

I am trying to calculate a sum for a set of raster but before I need to disregard No Data values (that are equal to -9999 for my rasters) by using SetNull function. It gives an error. What could be ...
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0answers
17 views

Hiding NoData values of a raster in MapServer

In a MapServer NoData value pixels can be hide by using the following code inlcusion in a mapfile: `PROCESSING 'BANDS=3,2,1'` Now I have raster with multiple combinations of NoData Values other than ...
3
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1answer
49 views

Nodata value making holes in merged GeoTIFFs in QGIS?

I am trying to remove black borders around the edge of a GeoTIFF. The Black border around the GeoTIFF has an RGB value of (0,0,0). I have tried assigning 0 as a "No Data" value to the tiff, but QGIS ...
2
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1answer
65 views

Additional No Data Value Raster Pyqgis 3

I would like to improve way to adjust histogram of Sentinel 2 images in Qgis 3. I am using pyqgis to do the first task to it (create histogram rightly). So I have images that 0 is a no data value. To ...
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1answer
26 views

Finding“NoData” area/percentage using ArcGIS Desktop?

I have a RGB raster that has been processed to remove cloud/shadow coverage and then put in a mosaic with other RGB rasters to fill in the missing gaps. Unfortunately all the gaps have not been ...
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0answers
18 views

NoData values in soil wetness index

I would like to know why I am getting no data pixels in my soil wetness raster, since none of the source rasters used to calculate the SWI have no data values. method I used: soil data from HWSD FAO ...
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0answers
71 views

Raster nodata = -3.4028234663852886e+38 [closed]

I'm very new to raster manipulation, and I'm getting a nodata value of -3.4028234663852886e+38 when importing USGS NED 1/3 arc-second n41w074 1 x 1 degree IMG using rasterio on Python. What is it ...
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0answers
83 views

“Clip Raster by Mask Layer” produces zero values (and not Nodata) outside mask boundaries

This is my first question here. I have a big raster of the world's nighttime lights and want to clip it down to the Adm0 of a country: In order to do so, in QGIS 2.18 what I do is using the Clipper ...
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0answers
19 views

NoData cells appeared in segemented raster

I am trying to classify an aerial image of a dike into grass and weeds. I used an aerial RGB image of 10 cm resolution being a TIF file. This aerial image is cleaned and contains no gaps. Only outside ...
2
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1answer
65 views

Reducing file size by not storing no-data points

I have to compute sea wave forecast for large period of time. Land information is of no use here. Is there any file format that allows to not store no-data/fill values for land area to reduce file ...
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0answers
39 views

Limiting sharp drop off of coastal DEM raster where there is no data using QGIS?

I'm stitching numerous tiled DEM's using Build Virtual Raster and then 'Align raster' function within QGIS 3.6 Original DEM has no data for sea area as expected: I get sharp drop off on coastal/...
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0answers
50 views

Importing 16-bit data into Google Earth Engine

I am trying to import 16-bit data into Google Earth Engine. I get this error. No data value 65536.0 cannot be applied to band #0 of type Integer<0, 65535>. No Data is 65536 I tell it that ...
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2answers
454 views

Inserting nodata value using GDAL?

I'd like to edit the nodata values in several raster files, but big number of these file doesn't have any nodata value defined, there is nothing to edit. I'v tried the gdal_translate -a_nodata ...
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0answers
27 views

gdal_merge novalue

I managed to run gdal_merge for multiple geotiles (jpeg). I am using the following options: command = "gdal_merge.py -init 0 -a_nodata 0 -co COMPRESS=LZW -co BIGTIFF=YES -o "+out_bez+" -of gtiff " +...
0
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1answer
113 views

QGIS 3.4 Stream delineation problem, lines running too far into ocean

I am using QGIS 3.4.4 Madeira version trying to delineate the stream and catchment areas of a small Bay in Honduras based on the technique of Hanz van der kwast tutorial "Stream and Catchment ...
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0answers
36 views

Filling NoData around bridges in DEM

Is it possible to fill no data around bridges without pixels blurriness (see picture). I use Elevation Void fill function, also tried in qgis No data filling and Grassgis r.fillnulls. I know, that I ...
3
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0answers
63 views

Problems with DEM exporting after Elevation Void Fill function use

I filled nodata values in DEM by Elevation Void Fill function, everything was ok, but when I exported it, the raster looks different (see picture above), how can I solve this problem? I also tried r....
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0answers
119 views

How delete delete or mask nodata 0 value in the mask

I have raster (with 5 bands) and shapfile in the same projection. I do this script for rastersize and do mask and clip raster or crop raster with mask but I need to have just clip raster without black ...
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0answers
67 views

Raster values shows no data when using identify features tool

I used vector to raster function in QGIS, to convert some points with different values to raster. I tried to use the "Identify Features" to check values for each raster box. The values shows no data ...
1
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1answer
251 views

Google Earth Engine - how to set masked pixels to 'noData'

Lets say I have a region of mangrove forests (from a classified Landsat image) and I mask out all non mangrove pixels. I view this as a layer on the map and it shows the mangrove forests on the map ...
3
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0answers
152 views

How do I fill Landsat 7 SLC gaps using QGIS?

I am currently using the QGIS 3.4.0 Raster -> Analysis -> Fill nodata (a tool for Landsat 7 data). I am using the directly downloaded USGS tiff band files with corresponding gap mask band tiffs ...
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0answers
81 views

How can I stop single pixel nodata values propagating through a tile pyramid when using gdal2tiles?

I am using gdal2tiles_parallel.py to generate a tile pyramid from a single geotiff with nodata value set. I have noticed that if I have a small hole in the original geotiff (say single pixel), then I ...
1
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0answers
57 views

rasterio - nodata per band [closed]

I am looking at a way to specify a different nodata value for each band in rasterio. I tried to: use the nodata key in the profile with a tuple or list of nodata values, set the nodatavals attribute,...
4
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2answers
693 views

Interpolate smoothly nodata values in QGIS

I have a DEM raster where all the buildings have been extruded and now contain "nodata" values. I'd like fill the holes and get a nice and continuous surface (which would approximately correspond to ...
0
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0answers
35 views

Polygon interpolation neighbour average?

I am trying to estimate empty values based on a polygon layer we received from another study. Is there a way to calculate an average value for polygon A based on neighbours B,C, etc that border it? I ...
0
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0answers
59 views

How to preserve NoData areas when changing data type in GeoTiff with QGIS or gdal_translate?

I have a float geotiff raster with values 0, 1 and 2, along with a nodata area. I'm trying to convert the file type do Byte but I'm not being able to preserve the nodata area. It gets converted to 0 ...
0
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1answer
386 views

Filling no data value in raster using ArcGIS Desktop?

I have a raster with no data values, I want to give them values according to values around them. If a no data pixel is surrounded by 8 pixels whose values are 1 then the no data pixel should adopt ...
2
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2answers
1k views

How to create a TIFF file using GDAL from a numpy array and specifying NoData value

I have some tiff files I obtained from splitting a bigger tiff file using gdal translate. The border tiff files have some nodata values, which I can see in numpy as number 15. I want to manipulate ...
0
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0answers
49 views

Set multiple values to nodata - Erdas Imagine 2015

I am having trouble with the data ranges in the Landsat 8 surface reflectance product which I downloaded from USGS. The Lansat 8 surface reflectance handbook says the valid range is 0 - 10,000 range ...
0
votes
1answer
216 views

Meaning of NULL when using condition in gdal_calc

I am confused with the results of using a condition in gdal_calc. Initially I thought that gdal_calc was setting pixels to nodata where a condition is not met. In the documentation (http://www.gdal....
3
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0answers
63 views

Raster NoData Value

So over the years working with elevation and image rasters in various formats I always kind of ignore the value of No Data. I usually just let the software/vendor/someone else decide on the value for ...
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0answers
46 views

The SetNull tool does not correctly change “-9999” into NODATA

I am using ArcMap 10.5.1 and .tif raster data. When I executed the SetNull tool to convert all "-9999" values into NoData, the range of values in the output raster was greater than that in the ...
2
votes
1answer
499 views

Use gdal to set multiband raster values to no data

I need to set a 3 band multiband raster (GeoTIff) where band 1 = 0 AND band 2 = 0 AND band 3 = 0 then this is no data (0,0,0 is No Data). Not OR in each band but AND across the 3 bands. I think it is ...
1
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1answer
150 views

Mapserver / QGis and DEM GeoTIFF different nodata values behaviour

I Have a problem with novalue datas in my DEM… This is the workflow I did: my DEM datas are in multiple Arcgis ASCII grids… Each .asc files have a header containing "NODATA_value -99999.00". I ...
2
votes
0answers
47 views

NoData and Multiband Calculations

I was recently trying to perform some band math calculations in multiband images. I have a big chunk of images witch contains more than 300 bands (dates) each. So I first choosed ENVI to do this ...
3
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0answers
70 views

NODATA on MapServer

I am trying to generate a DEM mosaic to publish via a WCS using MapServer. Unfortunately I can not remove the NODATA. In MapServer's own tutorials and discussion groups suggest PROCESSING "NODATA = 0",...
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0answers
188 views

GDAL API: GDALPolygonize - nodata

I am attempting to polygonize a raster using GDAL C API. The input rasters can contain nodata pixels. My current method (see the code below) produces a new polygon vector, but the output also includes ...
0
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1answer
95 views

Writing no_data_value within jpeg2000[kdu] with gdal_translate

I would like to specify a NO_DATA_VALUE within a JPEG2000 file (I use the JP2KAK driver). When I call gdal_translate -of JP2KAK -co QUALITY=100 input.vrt ouptut.jp2 , I get an aux.xml file alongside, ...
1
vote
1answer
1k views

GEE: How to transform masked values (NODATA) to -9999?

How can I transform NoData (masked) values to a value? When the image is mapped, there are a lot of values that are masked and I would like to get a value (-9999) on that masked pixels. var region = ...
0
votes
1answer
108 views

Is the cell size dependent on the number of features for the Euclidean Distance tool?

I have attempted to run the Euclidean Distance tool, using ArcMap 10.5.1, on a feature class of 50 points (hospitals), but I received an invisible output. Using 'Identify' I get 'NoData' for the pixel ...
3
votes
2answers
702 views

Filling NA gaps in raster with R?

I have soil data rasters from SoilGrids.org that have some small holes with NA cells (White spaces in the image) that I want to fill using some interpolation method to get a more spatially continuous ...