| ENVI? [message #11935] |
Tue, 09 June 1998 00:00  |
mab
Messages: 1
Registered: June 1998
|
Junior Member |
|
|
Hi,
I'm currently trying to write some simple user functions and custom file
input routines under ENVI 2.7 on a PC (NT). I'm not sure if this is the
correct newsgroup (couldn't find an ENVI one!). If so, does anyone have any
experience of this type of thing? I've managed to read in some data
correctly, but I haven't been able to find out how to apply specific user
routines to my data.
Mark Buckley
Rutherford Appleton Laboratory
mark.buckley@rl.ac.uk
|
|
|
|
| Re: ENVI? [message #12058 is a reply to message #11935] |
Fri, 12 June 1998 00:00  |
menakkis
Messages: 37
Registered: June 1998
|
Member |
|
|
Mark Buckley <mab@rl.ac.uk> wrote:
> I'm currently trying to write some simple user functions and custom file
> input routines under ENVI 2.7 on a PC (NT). I'm not sure if this is the
> correct newsgroup (couldn't find an ENVI one!). If so, does anyone have any
> experience of this type of thing? I've managed to read in some data
> correctly, but I haven't been able to find out how to apply specific user
> routines to my data.
I guess you've come to the right place, even though there's scarcely ever a
mention of ENVI in this group. You didn't mention whether you have much
experience with IDL. If you are familiar with IDL widget programming then
you should find it quite easy to program an ENVI user function that blends OK
with ENVI. Apart from using a handful of core ENVI routines (and following a
couple of other small steps) it's really up to you to do your thing in IDL.
(ENVI has a lot of support routines including compound widgets and such, but
you can get away with using a fairly small subset.) But if you are new to
IDL programming then you should really get into IDL first. Check out David
Fanning's web page (http://www.dfanning.com) for the excellent resources and
services he offers.
Assuming you know IDL... I'd recommend that you get the current version of
ENVI - 3. The documentation on programming user functions has improved.
There's even a little tutorial on it. And there are several examples in
ENVI's LIB directory. In my opinion the first ENVI routines you should get to
know are ENVI_SELECT, ENVI_FILE_QUERY, MAGIC_MEM_CHECK, ENVI_INIT_TILE,
ENVI_GET_TILE, ENVI_TILE_DONE, ENVI_ENTER_DATA and ENVI_SETUP_HEAD (to work
with ENVI's "available bands list", etc, rather than doing independent file
handling). Also learn how to add your functions to ENVI's menu (dead
simple). I haven't done a great deal of ENVI programming (just a couple of
routines, actually), but feel free to emai> <input type=
-----== Posted via Deja News, The Leader in Internet Discussion ==-----
http://www.dejanews.com/ Now offering spam-free web-based newsreading
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
