| Problems with hires maps with IDL v4.0.1 [message #4920] |
Thu, 24 August 1995 00:00  |
eckman
Messages: 8
Registered: February 1991
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Junior Member |
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I just installed IDL v4.0.1 on a DEC Alpha running OSF/1 v3.2C and
cannot use the high resolution maps. A simple example of the problem
is:
IDL> map_set,/mercator,/continents,/hires
% Compiled module: MAP_SET.
% Compiled module: MAP_CONTINENTS.
% Compiled module: FILEPATH.
% Array dimensions must be greater than 0.
% Error occurred at: MAP_CONTINENTS 575
/usr1/local/rsi/idl_4/lib/map_continents.pro
% MAP_SET 901
/usr1/local/rsi/idl_4/lib/map_set.pro
% $MAIN$
% Execution halted at: $MAIN$
Does anyone running the new version of IDL see the same thing? This
worked fine under IDL v4.0.
Richard Eckman
NASA Langley Research Center
Hampton, VA
eckman@eos1.larc.nasa.gov
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| Re: Problems with hires maps with IDL v4.0.1 [message #4961 is a reply to message #4920] |
Wed, 06 September 1995 00:00  |
frank
Messages: 15
Registered: August 1993
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Junior Member |
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Here are some more strange features (?) of the hires maps.
The coastlines apparantly contains more information than
is ever lectured in a geography class!
I keep finding unexisting (?) coastlnes spread out across the world.
Some island and lakes have double lines.
Several open contours exists.
Are there errors in the CIA database?
Check out the double stitched islands:
window,0,xsize=700,ysize=700,retain=2
map_set,/merc,limit=[-23, 54, -18, 59],/grid
map_continents, /hires, /coast
Or this strange mosaic :
window,0,xsize=700,ysize=700,retain=2
map_set,/merc,limit=[-75, -80, -70, -70], /grid
map_continents, /hires, /coast
Or these numerous open lines in the south-east part of
the Red Sea:
window,0,xsize=700,ysize=700,retain=2
map_set,/merc,limit=[15, 40, 20, 43], /grid
map_continents, /hires, /coast
There are several more examples of these three effects.
What's going on ?
(BTW: IDL 4.0, SGI IRIX 5.3)
If we can't trust CIA, who CAN we trust?
--
/* Frank J. �ynes -------------------- (frank@spacetec.no) */
/* Spacetec a.s */
/* Prestvannveien 38, N-9005 Troms�, Norway */
/* Telephone : +47 77 68 45 00 Telefax: +47 77 65 58 59 */
/* (...with the bravery of being out of range!) */
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