| Question regarding Envi_convert_file_map_projection [message #65749] |
Fri, 20 March 2009 13:42 |
![None[1] is currently offline](theme/default/images/xoffline.png.pagespeed.ic.XRkd1fkXye.png "None[1] is currently offline")
None[1]
Messages: 13
Registered: August 2007
|
Junior Member |
|
|
Hi I am trying to change the projection of the file from EASE-Grid
Equal Area cylindrical to geographic by using the following:
o_proj = envi_proj_create(/geographic)
envi_convert_file_map_projection, fid=fid, $
pos=pos, dims=[-1l, 0, 1382, 0, 585], o_proj=o_proj,
$;o_pixel_size=o_pixel_size,$
out_name=out_name
Even though I am explicitly specifying the dims size, the number of
samples and Lines changes from 1383, 586 to 1598, 754 in the output
file.
Is there a way to avoid this?
Please Advise
The header info of Input file is as follows
ENVI
description = {
File Imported into ENVI.}
samples = 1383
lines = 586
bands = 1
header offset = 0
file type = ENVI Standard
data type = 12
interleave = bsq
sensor type = Unknown
byte order = 0
map info = {EASE-Grid Global, 1.5000, 1.5000, -17321659.7750,
7332251.0625, 2.5067525000e+04, 2.5067525000e+04, WGS-84,
units=Meters}
projection info = {99, 6371228.0, 6371228.0, 0.000000, 0.000000, 0.0,
0.0, 30.000000, EASE-Grid Global, WGS-84, User Proj Cylind Equal Area,
units=Meters}
wavelength units = Unknown
The header info of output file is as follows
ENVI
description = {
File map projection conversion result.Method: 1st degree RST w/
nearest
neighbor [Fri Mar 20 15:48:40 2009]}
samples = 1598
lines = 754
bands = 1
header offset = 0
file type = ENVI Standard
data type = 12
interleave = bsq
sensor type = Unknown
byte order = 0
map info = {Geographic Lat/Lon, 1.0000, 1.0000, -179.99999578,
86.71674408, 2.2518540843e-001, 2.2670304577e-001, WGS-84,
units=Degrees}
wavelength units = Unknown
Thanks & Regards,
Rajesh
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
