[GRASS5] A naive opinion on how grass *should* work
Russell Nelson
nelson at crynwr.com
Thu May 2 15:21:12 EDT 2002
Helena Mitasova writes:
> set up a region at the beginning is a surprisingly big obstacle.
> (well not so surprisingly, given the oldish interface for doing that)
No, it's not the interface. Well, okay, it *is* the interface, but
more than that it's the necessary to know MORE than I really know.
Here's the questions I asked myself:
``1?? They're giving me a default lat/lon of 0N, 0E through 1N, 1E??
That's in the middle of the fricking ocean!! That doesn't make any
sense.''
``Cell resolution? What's a cell? How do I know what my cell
resolution is? I haven't even imported my first map, and it wants to
know what the resolution of the map is going to be? I have no
fricking idea.''
``Hrm. It doesn't accept "75.00W". Maybe "75 00'W". No, that's not
right either. How about "-75.00"? No, that doesn't work either. How
about "75.0000W"? How about "7500W"? ARRGGGGGHHHHHH!''
``Ahhhh, okay, it just wants integer degrees. But how big should I
make my region? Just the one map I want to do first, or should I make
it big enough to hold all fifty maps??''
> I guess that the problem to getting this addressed is that most of the
> issues mentioned below are not such big issues once you use GRAS a lot
> and especially with the improvements in r.in.gdal. (Russ use r.in.gdal
> instead of r.in.tiff).
It didn't get built on my machine because libgdal was missing.
> For example the issue of adapting the region
> to displayed map (as Carl has mentioned before) would drive you crazy
> if you are doing some modeling using a larger number of maps with
> different extent and resolutions and you need to preview those maps,
Wait a second. You mean that the region is only used for viewing??
Then why do I have to set it before doing anything in grass??
See how little I know?
> >when I go into a location, grass should change my
> >current directory to be that of the location.
>
> By no means you would want to do that - you don't want to touch the
> stuff in that directory if you are newbie.
You're right, I don't want to look in the subdirectories. But it
would be nice if filename completion worked. That way I could use
a-very-long-name-for-this-particular-dataset, and only have to type
a-v<TAB>. So since I don't want to look in the subdirectories, I
should have an empty file with the same name as the raster file.
--
-russ nelson http://russnelson.com | Okay, enough is enough!
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