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Jonas
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  • 9

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here

UPDATE I got it working just fine by using Raster -> Miscellaneous -> Build Virtual Raster but I'd still like to know what's the problem here...

As requested, Does the gdalinfo forvirtual raster have any disadvantages vs the two input layers:merged one?

Size is 328, 199

Origin = (675672.000000000000000,5333000.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333000.000) 

Lower Left ( 675672.000, 5332801.000) 

Upper Right ( 676000.000, 5333000.000) 

Lower Right ( 676000.000, 5332801.000) 

Center ( 675836.000, 5332900.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999


Size is 328, 489

Origin = (675672.000000000000000,5333489.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333489.000) 

Lower Left ( 675672.000, 5333000.000) 

Upper Right ( 676000.000, 5333489.000) 

Lower Right ( 676000.000, 5333000.000) 

Center ( 675836.000, 5333244.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here

UPDATE I got it working just fine by using Raster -> Miscellaneous -> Build Virtual Raster but I'd still like to know what's the problem here...

As requested, the gdalinfo for the two input layers:

Size is 328, 199

Origin = (675672.000000000000000,5333000.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333000.000) 

Lower Left ( 675672.000, 5332801.000) 

Upper Right ( 676000.000, 5333000.000) 

Lower Right ( 676000.000, 5332801.000) 

Center ( 675836.000, 5332900.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999


Size is 328, 489

Origin = (675672.000000000000000,5333489.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333489.000) 

Lower Left ( 675672.000, 5333000.000) 

Upper Right ( 676000.000, 5333489.000) 

Lower Right ( 676000.000, 5333000.000) 

Center ( 675836.000, 5333244.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here

UPDATE I got it working by using Raster -> Miscellaneous -> Build Virtual Raster but I'd still like to know what's the problem here. Does the virtual raster have any disadvantages vs the merged one?

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Source Link
Jonas
  • 169
  • 9

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here

UPDATE I got it working just fine by using Raster -> Miscellaneous -> Build Virtual Raster but I'd still like to know what's the problem here...

As requested, the gdalinfo for the two input layers:

Size is 328, 199

Origin = (675672.000000000000000,5333000.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333000.000) 

Lower Left ( 675672.000, 5332801.000) 

Upper Right ( 676000.000, 5333000.000) 

Lower Right ( 676000.000, 5332801.000) 

Center ( 675836.000, 5332900.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999


Size is 328, 489

Origin = (675672.000000000000000,5333489.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333489.000) 

Lower Left ( 675672.000, 5333000.000) 

Upper Right ( 676000.000, 5333489.000) 

Lower Right ( 676000.000, 5333000.000) 

Center ( 675836.000, 5333244.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here

UPDATE I got it working just fine by using Raster -> Miscellaneous -> Build Virtual Raster but I'd still like to know what's the problem here...

As requested, the gdalinfo for the two input layers:

Size is 328, 199

Origin = (675672.000000000000000,5333000.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333000.000) 

Lower Left ( 675672.000, 5332801.000) 

Upper Right ( 676000.000, 5333000.000) 

Lower Right ( 676000.000, 5332801.000) 

Center ( 675836.000, 5332900.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999


Size is 328, 489

Origin = (675672.000000000000000,5333489.000000000000000)

Pixel Size = (1.000000000000000,-1.000000000000000)

Metadata:

TIFFTAG_ARTIST=created by LAStools (c) [email protected]

TIFFTAG_SOFTWARE=LAStools is a product of rapidlasso GmbH, Germany

Image Structure Metadata:

COMPRESSION=LZW

INTERLEAVE=BAND

Corner Coordinates:

Upper Left ( 675672.000, 5333489.000) 

Lower Left ( 675672.000, 5333000.000) 

Upper Right ( 676000.000, 5333489.000) 

Lower Right ( 676000.000, 5333000.000) 

Center ( 675836.000, 5333244.500) 

Band 1 Block=328x20 Type=Float32, ColorInterp=Gray

NoData Value=-9999
Source Link
Jonas
  • 169
  • 9

QGIS: Merging Rasters (Digital Surface Models)

I got several Raster Layers as Digital Surface Models (DSM) in QGIS. I now want to merge them by using Raster -> Miscellaneous -> Merge, but if I do, the resulting merged raster layer is just blank space, as seen in the picture below. Does anyone know what's the problem here? Changing the data type doesn't d anything, I used float32. I also tried merging only two, also didn't work...enter image description here