SASGIS - SAS.Планета
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0003730SAS.ПланетаРефакторингpublic22-12-2020 12:2223-12-2020 08:22
mrjack 
zed 
highmajoralways
closedno change required 
Windows7Home Basic
201212 
 
0003730: SAS,Need to perfect the direction
As you can see. SAS, when downloading maps, downloading polygons, and exporting by stitching, open ALPHA and pass, there will be obvious jagged shapes around. It's worse. In fact, it is better to just have a rectangle.
1. Choose any triangle. Then download the image
2. Select Mosaic and open the ALPHA channel. Present the picture.
3. Look
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has duplicate 0003729closed zed SAS,Need to perfect the direction 
jpg 1.jpg (143,986) 22-12-2020 12:22
http://www.sasgis.org/mantis/file_download.php?file_id=2486&type=bug
jpg

jpg Image_1.jpg (307,039) 23-12-2020 08:11
http://www.sasgis.org/mantis/file_download.php?file_id=2488&type=bug
jpg Image_2.jpg (139,434) 23-12-2020 08:11
http://www.sasgis.org/mantis/file_download.php?file_id=2489&type=bug
jpg
Issue History
22-12-2020 12:22mrjackNew Issue
22-12-2020 12:22mrjackFile Added: 1.jpg
22-12-2020 15:40zedRelationship addedhas duplicate 0003729
22-12-2020 15:48zedNote Added: 0020028
22-12-2020 18:48vdemidovStatusnew => feedback
23-12-2020 07:59mrjackNote Added: 0020029
23-12-2020 07:59mrjackStatusfeedback => new
23-12-2020 08:05mrjackNote Added: 0020030
23-12-2020 08:11zedFile Added: Image_1.jpg
23-12-2020 08:11zedFile Added: Image_2.jpg
23-12-2020 08:11mrjackNote Added: 0020031
23-12-2020 08:21zedNote Added: 0020032
23-12-2020 08:22zedStatusnew => closed
23-12-2020 08:22zedAssigned To => zed
23-12-2020 08:22zedResolutionopen => no change required

Notes
(0020028)
zed   
22-12-2020 15:48   
Your screenshot is OK - JPEG doesn't support transparency (alpha channel).

Describe in detail what you expect from SAS?
(0020029)
mrjack   
23-12-2020 07:59   
Not in JPG format, the original image is in tif format. gloabmaper has a function. According to the primitive boundary. Such as kml. It is a triangular shape. You can crop a rectangular image into a triangle. Image downloaded by SAS. Level polygon frame selection. The downloaded images, stitched together, are not polygons, but opposite sex. All around are the tile shapes of gears. Looks worse
(0020030)
mrjack   
23-12-2020 08:05   
Just like the picture above, the frame itself is selected as a triangle, and it is weird to splice it out by contact. If you download according to city boundaries. That's worse. Only call up other software for cutting. kind of hard. Secondly, there is another suggestion. Why download the image? First download the image tile, then download the overlay. Then stitch together, and finally cut it on other software. Very troublesome, like going back to the bedroom and needing a key. After opening it, I found that there were 3 doors behind. GOD. In fact, why can't you choose to download the tiles and overlays together when you download the tiles. Then automatically stitch and export pictures. In other words, SAS script can do it?
(0020031)
mrjack   
23-12-2020 08:11   
Sorry, SAS is a free software that is already very good. Just a small suggestion. Thank you
(0020032)
zed   
23-12-2020 08:21   
I attached 2 screenshots: first from SAS, second from GlobalMapper. This is how SAS works - it can stitch tiles, but you will get transparent holes if some tiles missed (if imagery format support transparency). So, to avoid this holes you must download all tiles with rectangle selection.

> In other words, SAS script can do it?
No. And this will not changed in the future.