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Dateline crossing dcw polygons and tiles #8318

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merged 4 commits into from
Jan 22, 2024
Merged

Dateline crossing dcw polygons and tiles #8318

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4a59717
Fix -R for the 3 dateline-crossing countries
PaulWessel Jan 20, 2024
e728362
Create dcw-180-crossers.sh
PaulWessel Jan 20, 2024
cc89950
Update PS
PaulWessel Jan 20, 2024
98545fe
Merge branch 'master' into dateline-crossing-dcw
Esteban82 Jan 22, 2024
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3 changes: 3 additions & 0 deletions src/gmt_dcw.c
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Original file line number Diff line number Diff line change
Expand Up @@ -900,6 +900,9 @@ struct GMT_DATASET * gmt_DCW_operation (struct GMT_CTRL *GMT, struct GMT_DCW_SEL
wesn[XLO] = 0.0;
wesn[XHI] = 360.0;
}
/* US DCW can return dumb things like this: -R172.436/-66.9489 */
if (wesn[XLO] > 0.0 && wesn[XHI] < 0.0) /* Crazy US, RU, and Fiji crossing dateline and get backwards limit signs... */
wesn[XHI] += 360.0;
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Region implied by DCW polygons is %g/%g/%g/%g\n", wesn[XLO], wesn[XHI], wesn[YLO], wesn[YHI]);
}
gmt_M_free (GMT, order);
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4 changes: 2 additions & 2 deletions test/baseline/grdimage.dvc
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@@ -1,5 +1,5 @@
outs:
- md5: 226f00f8bb56bfda27786069c3ecfa19.dir
nfiles: 35
- md5: 852cd5e3aed9292b7f864d0a18d207fc.dir
nfiles: 36
path: grdimage
hash: md5
9 changes: 9 additions & 0 deletions test/grdimage/dcw-180-crossers.sh
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@@ -0,0 +1,9 @@
#!/usr/bin/env bash
# Ensure that the region for the US, Russia and Fiji are sensible
# when accessing tiles, i.e., 5m and higher resolutions.
# and that maps are made. Issue only affects tiles.
gmt begin dcw-180-crossers ps
gmt grdimage @earth_relief_05m -Bafg180 -RUS
gmt grdimage @earth_relief_05m -Bafg180 -RRU -Y7.5c
gmt grdimage @earth_relief_05m -Bafg180 -RFJ -Y4.5c
gmt end show