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Remove border lines of SRTM tiles rendered as hillshade
SRTM NASA hillshade grainy appearanceHow to remove strange gdaldem hillshade artifacts?gdalbuildvrt error when mosaicking SRTM data with different NoData valuesSRTM v4 hillshade very grainly surfaceRendered tiles look stretchedFixing undesirable lines between tiles from SRTM contour line extraction?SRTM 30m hillshade output low resolutionStrange vertical lines on hillshadeGetting tiles rendered by Cesium?Discrepancies in SRTM 1ArcSec DEM
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I have downloaded several SRTM DEM raster tiles from https://dwtkns.com/srtm30m/, and created hillshade versions from the tiles. However, upon closer inspection, the hillshade tiles now have border lines that I do not know how to hide or remove (like in the image below, which shows the border lines of the 4 tiles):
I tried checking the Styles options but cannot find a way to hide the lines/borders. When trying to render the tiles as singleband pseudocolor, no lines are shown, so I am suspecting the lines are only generated when doing a hillshade render:
How can I hide/remove these hillshade tile border lines?
qgis raster tiles srtm hillshade
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
add a comment |
I have downloaded several SRTM DEM raster tiles from https://dwtkns.com/srtm30m/, and created hillshade versions from the tiles. However, upon closer inspection, the hillshade tiles now have border lines that I do not know how to hide or remove (like in the image below, which shows the border lines of the 4 tiles):
I tried checking the Styles options but cannot find a way to hide the lines/borders. When trying to render the tiles as singleband pseudocolor, no lines are shown, so I am suspecting the lines are only generated when doing a hillshade render:
How can I hide/remove these hillshade tile border lines?
qgis raster tiles srtm hillshade
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
Side note: since these tiles belong to the north hemisphere, you may wish to apply hillshading coming from a South direction, since that's the angle with which the Sun illuminates the northern hemisphere.
– jjmontes
Jun 10 at 14:05
add a comment |
I have downloaded several SRTM DEM raster tiles from https://dwtkns.com/srtm30m/, and created hillshade versions from the tiles. However, upon closer inspection, the hillshade tiles now have border lines that I do not know how to hide or remove (like in the image below, which shows the border lines of the 4 tiles):
I tried checking the Styles options but cannot find a way to hide the lines/borders. When trying to render the tiles as singleband pseudocolor, no lines are shown, so I am suspecting the lines are only generated when doing a hillshade render:
How can I hide/remove these hillshade tile border lines?
qgis raster tiles srtm hillshade
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
I have downloaded several SRTM DEM raster tiles from https://dwtkns.com/srtm30m/, and created hillshade versions from the tiles. However, upon closer inspection, the hillshade tiles now have border lines that I do not know how to hide or remove (like in the image below, which shows the border lines of the 4 tiles):
I tried checking the Styles options but cannot find a way to hide the lines/borders. When trying to render the tiles as singleband pseudocolor, no lines are shown, so I am suspecting the lines are only generated when doing a hillshade render:
How can I hide/remove these hillshade tile border lines?
qgis raster tiles srtm hillshade
qgis raster tiles srtm hillshade
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
asked Jun 9 at 17:01
JAT86JAT86
3251 silver badge7 bronze badges
3251 silver badge7 bronze badges
Side note: since these tiles belong to the north hemisphere, you may wish to apply hillshading coming from a South direction, since that's the angle with which the Sun illuminates the northern hemisphere.
– jjmontes
Jun 10 at 14:05
add a comment |
Side note: since these tiles belong to the north hemisphere, you may wish to apply hillshading coming from a South direction, since that's the angle with which the Sun illuminates the northern hemisphere.
– jjmontes
Jun 10 at 14:05
Side note: since these tiles belong to the north hemisphere, you may wish to apply hillshading coming from a South direction, since that's the angle with which the Sun illuminates the northern hemisphere.
– jjmontes
Jun 10 at 14:05
Side note: since these tiles belong to the north hemisphere, you may wish to apply hillshading coming from a South direction, since that's the angle with which the Sun illuminates the northern hemisphere.
– jjmontes
Jun 10 at 14:05
add a comment |
2 Answers
2
active
oldest
votes
SRTM tiles (3601 px * 3601 px in this case) have 1-pixel overlaps in between. When you apply transparency (or reduced opacity) to your hillshade layer, such overlapping pixels stand out. You may have observed this also on the original images, if you apply transparency (see below).
..... original SRTM, Pseudo-color + 60% opacity
Anyway, you can avoid this by merging these tiles. One way would be Build Virtual Raster (either from menu > Raster > Miscellaneous, or from the Processing Toolbox).
Do not tick on Place each input file into a separate band option.
After setting hillshade on the Virtual Raster Layer, you will not see the boundaries anymore.
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
add a comment |
As described by @Kazuhito, the tiles should be combined into a virtual raster. Their method is performed within QGIS. If you have a large number of tiles you may prefer to do this from the commandline. To do so open a shell in the directory containing the SRTM tiles and run gdalbuildvrt combined.vrt *.hgt The resulting virtual raster (combined.vrt) can then be loaded into QGIS.
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
add a comment |
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2 Answers
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2 Answers
2
active
oldest
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SRTM tiles (3601 px * 3601 px in this case) have 1-pixel overlaps in between. When you apply transparency (or reduced opacity) to your hillshade layer, such overlapping pixels stand out. You may have observed this also on the original images, if you apply transparency (see below).
..... original SRTM, Pseudo-color + 60% opacity
Anyway, you can avoid this by merging these tiles. One way would be Build Virtual Raster (either from menu > Raster > Miscellaneous, or from the Processing Toolbox).
Do not tick on Place each input file into a separate band option.
After setting hillshade on the Virtual Raster Layer, you will not see the boundaries anymore.
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
add a comment |
SRTM tiles (3601 px * 3601 px in this case) have 1-pixel overlaps in between. When you apply transparency (or reduced opacity) to your hillshade layer, such overlapping pixels stand out. You may have observed this also on the original images, if you apply transparency (see below).
..... original SRTM, Pseudo-color + 60% opacity
Anyway, you can avoid this by merging these tiles. One way would be Build Virtual Raster (either from menu > Raster > Miscellaneous, or from the Processing Toolbox).
Do not tick on Place each input file into a separate band option.
After setting hillshade on the Virtual Raster Layer, you will not see the boundaries anymore.
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
add a comment |
SRTM tiles (3601 px * 3601 px in this case) have 1-pixel overlaps in between. When you apply transparency (or reduced opacity) to your hillshade layer, such overlapping pixels stand out. You may have observed this also on the original images, if you apply transparency (see below).
..... original SRTM, Pseudo-color + 60% opacity
Anyway, you can avoid this by merging these tiles. One way would be Build Virtual Raster (either from menu > Raster > Miscellaneous, or from the Processing Toolbox).
Do not tick on Place each input file into a separate band option.
After setting hillshade on the Virtual Raster Layer, you will not see the boundaries anymore.
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
SRTM tiles (3601 px * 3601 px in this case) have 1-pixel overlaps in between. When you apply transparency (or reduced opacity) to your hillshade layer, such overlapping pixels stand out. You may have observed this also on the original images, if you apply transparency (see below).
..... original SRTM, Pseudo-color + 60% opacity
Anyway, you can avoid this by merging these tiles. One way would be Build Virtual Raster (either from menu > Raster > Miscellaneous, or from the Processing Toolbox).
Do not tick on Place each input file into a separate band option.
After setting hillshade on the Virtual Raster Layer, you will not see the boundaries anymore.
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
answered Jun 9 at 18:39
KazuhitoKazuhito
17.4k4 gold badges22 silver badges90 bronze badges
17.4k4 gold badges22 silver badges90 bronze badges
add a comment |
add a comment |
As described by @Kazuhito, the tiles should be combined into a virtual raster. Their method is performed within QGIS. If you have a large number of tiles you may prefer to do this from the commandline. To do so open a shell in the directory containing the SRTM tiles and run gdalbuildvrt combined.vrt *.hgt The resulting virtual raster (combined.vrt) can then be loaded into QGIS.
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
add a comment |
As described by @Kazuhito, the tiles should be combined into a virtual raster. Their method is performed within QGIS. If you have a large number of tiles you may prefer to do this from the commandline. To do so open a shell in the directory containing the SRTM tiles and run gdalbuildvrt combined.vrt *.hgt The resulting virtual raster (combined.vrt) can then be loaded into QGIS.
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
add a comment |
As described by @Kazuhito, the tiles should be combined into a virtual raster. Their method is performed within QGIS. If you have a large number of tiles you may prefer to do this from the commandline. To do so open a shell in the directory containing the SRTM tiles and run gdalbuildvrt combined.vrt *.hgt The resulting virtual raster (combined.vrt) can then be loaded into QGIS.
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
As described by @Kazuhito, the tiles should be combined into a virtual raster. Their method is performed within QGIS. If you have a large number of tiles you may prefer to do this from the commandline. To do so open a shell in the directory containing the SRTM tiles and run gdalbuildvrt combined.vrt *.hgt The resulting virtual raster (combined.vrt) can then be loaded into QGIS.
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
edited Jun 10 at 13:38
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
answered Jun 10 at 10:14
Alex HajnalAlex Hajnal
5592 silver badges10 bronze badges
5592 silver badges10 bronze badges
add a comment |
add a comment |
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Side note: since these tiles belong to the north hemisphere, you may wish to apply hillshading coming from a South direction, since that's the angle with which the Sun illuminates the northern hemisphere.
– jjmontes
Jun 10 at 14:05