Opened 11 years ago

Closed 5 years ago

#4246 closed enhancement (fixed)

gdal_retile.py with overlapping tiles

Reported by: jgrn307 Owned by: warmerdam
Priority: normal Milestone:
Component: default Version: unspecified
Severity: major Keywords: overlapping tiles
Cc: christian.mueller@…

Description

It would be really helpful if the script included the ability to add an overlap between adjacent tiles. The tile settings would be the same, but the overlap parameter would pull a "border" around each tile which overlaps with the tile next to it. The reason I'm asking is we are going to be performing neighborhood functions on post-tiled data (e.g. a 3x3 smooth) but the edges of the tiles would not function correctly, which would result in inter-tile seamlines after we stitch the tiles back together.

Change History (7)

comment:1 by Even Rouault, 11 years ago

Cc: christian.mueller@… added

comment:2 by Jukka Rahkonen, 8 years ago

I understand the need in your use case but it does also feel like a rather special use case.

I keep the ticket open but I think it would not be violent to close it as wontfix either.

comment:3 by jgrn307, 8 years ago

I'm not sure I agree that it is that special a use case. Any local window analysis would need this capability if the tiles were, for instance, sent to different workers on a cluster for processing. I'd request it be kept open in the hopes someone will add this capability down the line. It doesn't seem like it would be too hard to code up (is there some flavor of a "crop" occurring within the code?) It would just need to add a fixed margin to each tile's crop.

comment:4 by Even Rouault, 7 years ago

Priority: highnormal

All those tickets have more than one year and nobody has acted on it, so the priority is not so high

comment:5 by nicolasw, 6 years ago

Hello, has anybody worked on this at all? I can see that the gdal_retile.py docs now mention -overlap val_in_pixel (GDAL >= 2.2), but I can see this implemented anywhere in the source.

in reply to:  5 comment:6 by nicolasw, 6 years ago

Replying to nicolasw:

Hello, has anybody worked on this at all? I can see that the gdal_retile.py docs now mention -overlap val_in_pixel (GDAL >= 2.2), but I can see this implemented anywhere in the source.

Replying to myself: found it in rev 35009

comment:7 by Jukka Rahkonen, 5 years ago

Resolution: fixed
Status: newclosed
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