Bug #667
-JG/g projection (General Perspective)
| Status: | In Progress | Start date: | 2015-01-27 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: |  Paul | % Done: | 100% | |
| Category: | - | |||
| Target version: | Candidate for next bugfix release | |||
| Affected version: | 5.2-svn | Platform: |
Description
Hi,
When I use -JG projection, some projection centers cause weird behaviors of latitudinal gridlines (See attached script and images), e.g.
lon0=188.144925731 lat0=80.7167845195 #lon0=210.651901558 #lat0=78.8472134393 #lon0=190.718850211 #lat0=82.2203558311 psbasemap -Rg -JG$lon0/$lat0/1900/0/0/0/170/180/6i -Ba30f10g10/a5f5g5 -P > test.ps
Associated revisions
Improve genper gridline drawing with new crossing/outside functions, i.e. issue #667
Add another test for issue #667
Add genper example that fails (issue #667)
History
#1
Updated by Paul almost 4 years ago
- Status changed from New to Resolved
- Assignee set to Paul
- Target version set to Candidate for next bugfix release
- % Done changed from 0 to 100
Thanks for reporting this bug. I believe I have fixed it in r14037 as all tests currently run. I added one of your examples as a new test script (tests/genper/polar.sh) in case the problem resurface later...
#2
Updated by Chenjian almost 4 years ago
Thank you for your time! Unfortunately, this one:
lon0=280.969616634 lat0=58.7193421224 psbasemap -Rg -JG$lon0/$lat0/2513/0/0/0/200/180/6i -Ba30f30g30/a5f5g5NWSE -P > test.ps
still gives those lines. My projection centers and altitudes change with different point picks in a loop. Most results are good though.
#3
Updated by Paul almost 4 years ago
- Status changed from Resolved to In Progress
I see. Seems our algorithms do not check for points outside this funny octagon map boundary. Will have to consider various strategies here.
#4
Updated by Paul almost 4 years ago
- Status changed from In Progress to Resolved
I've implemented a new function to deal with gridline clipping. In r14056. Also added your other examples which all work for me now.
#5
Updated by Chenjian almost 4 years ago
- File test5.png added
Sorry. It still fails sometimes. Please see this case (test5.png attached):
lon0=225.989251068 lat0=80.3192229138 psbasemap -Rg -JG$lon0/$lat0/6166.78/0/0/54.6281322919/68.2/68.2/6i -Ba30f30g30/a5f5g5NW -P > test.ps
#6
Updated by Chenjian almost 4 years ago
Please excuse me for noise. It still fails at times. Please see the case and its reasult test5.png in the last post.
#7
Updated by Paul almost 4 years ago
- Status changed from Resolved to In Progress
We are aware of that. I changed the status to in progress - nothing new to report at this time.
#8
Updated by Paul about 3 years ago
No progress except I have turned your test5.png case into a test script so that we are reminded that it is still failing...