[GRASSLIST:9067] Re: file type and e00 import

[M S]

here are some samples that might be helpful. I dont have a straight up
answer to your question, but if i look through these export files in greater
detail I may be able to help come up with a pattern or key words that would
aid in automating this process. Right off the bat I dont see anything that
tells you directly what it is, or what topology is built for. The topology
in coverages/e00's builds off each other. meaning you can have various
"info" files associated with each data feature type. I pasted e00's of a
simple point, line and polygon coverage or E00 file. Its lenghty, but they
features are broken by the line of "=" signs. If you can script something
out i'm sure it would be useful. i ran into this problem a while back.

===================================================================
Here's an example of a simple point data set in e00 format. The key word
"LAB" after the EXP line seems to indicate its a point coverage or "label"
as the term is synomous in ESRI coverage terms.
EXP 0 T:\GARBAGE\THE_PT.E00
LAB 2
1 0 3.6663384E+00 3.0019684E+00
3.6663384E+00 3.0019684E+00 3.6663384E+00 3.0019684E+00
-1 0 0.0000000E+00 0.0000000E+00
TOL 2
1 2 0.0000000E+00
2 2 0.0000000E+00
3 2 0.0000000E+00
4 2 0.0000000E+00
5 2 0.0000000E+00
6 2 0.0000000E+00
7 2 0.0000000E+00
8 2 0.0000000E+00
9 2 0.0000000E+00
10 2 0.0000000E+00
-1 0 0 0 0 0 0
SIN 2
EOX
LOG 2
200511141212 0 0 0user ARCEDIT T:\GARBAGE\THE_PT
~
200511141214 0 0 0user build the_pt point
~
EOL
IFO 2
THE_PT.BND XX 4 4 16 1
XMIN 4-1 14-1 12 3 60-1 -1 -1-1 1-
YMIN 4-1 54-1 12 3 60-1 -1 -1-1 2-
XMAX 4-1 94-1 12 3 60-1 -1 -1-1 3-
YMAX 4-1 134-1 12 3 60-1 -1 -1-1 4-
3.6663384E+00 3.0019684E+00 3.6663384E+00 3.0019684E+00
THE_PT.PAT XX 4 4 16 1
AREA 4-1 14-1 12 3 60-1 -1 -1-1 1-
PERIMETER 4-1 54-1 12 3 60-1 -1 -1-1 2-
THE_PT# 4-1 94-1 5-1 50-1 -1 -1-1 3-
THE_PT-ID 4-1 134-1 5-1 50-1 -1 -1-1 4-
0.0000000E+00 0.0000000E+00 1 1
THE_PT.TIC XX 3 3 12 4
IDTIC 4-1 14-1 5-1 50-1 -1 -1-1 1-
XTIC 4-1 54-1 12 3 60-1 -1 -1-1 2-
YTIC 4-1 94-1 12 3 60-1 -1 -1-1 3-
1 4.5521653E-01 4.9458661E+00
2 6.5329719E+00 4.7490153E+00
3 2.9527557E-01 4.1830707E-01
4 7.1604323E+00 2.9527557E-01
EOI
EOS
==============================================================
here is a simple line coverage. The "ARC" after EXP line seems to indicate
its a line, but the same thing is present in a polygon model. a distinction
is the ".aat" file which is the arc attribute table. this says there is line
topology built for the dataset. ARC keyword in conjunction with a .AAT file
would indicate a line coverage/e00.
EXP 0 T:\GARBAGE\THE_LINE.E00
ARC 2
1 1 1 2 0 0 3
2.6697834E+00 3.3218503E+00 4.0354328E+00 2.4360235E+00
4.3553147E+00 2.2883856E+00
-1 0 0 0 0 0 0
TOL 2
1 2 2.0000000E-03
2 2 0.0000000E+00
3 2 0.0000000E+00
4 2 0.0000000E+00
5 2 0.0000000E+00
6 2 1.6855314E-02
7 2 1.6855314E-03
8 2 1.6855314E-03
9 2 1.6855314E-03
10 2 1.6855314E-03
-1 0 0 0 0 0 0
SIN 2
EOX
LOG 2
200511141213 0 0 0user ARCEDIT T:\GARBAGE\THE_LINE
~
200511141214 0 0 0user build the_line line
~
EOL
IFO 2
THE_LINE.AAT XX 7 7 28 1
FNODE# 4-1 14-1 5-1 50-1 -1 -1-1 1-
TNODE# 4-1 54-1 5-1 50-1 -1 -1-1 2-
LPOLY# 4-1 94-1 5-1 50-1 -1 -1-1 3-
RPOLY# 4-1 134-1 5-1 50-1 -1 -1-1 4-
LENGTH 4-1 174-1 12 3 60-1 -1 -1-1 5-EXP 0
======================================================
This is a simple polygon coverage in e00 format. This too has the "ARC"
after the EXP line, but further down in the E00 you can see there is a .PAL
file. I believe this stands for Polygon Attribute Label. It also has a LAB
component because in the ESRI polygon coverage model, all polygons have
label points associated with them.
EXP 0 T:\GARBAGE\THE_POLY.E00
ARC 2
1 2 1 1 2 1 5
4.9458661E+00 4.3452330E+00 4.9458661E+00 2.9404526E+00
6.4960628E+00 2.9650588E+00 6.5575781E+00 4.3676176E+00
4.9458661E+00 4.3452330E+00
-1 0 0 0 0 0 0
CNT 2
0 5.7361488E+00 3.6591427E+00
1 5.7361488E+00 3.6591427E+00
1
-1 0 0 0 0 0 0
LAB 2
1 2 5.7361197E+00 3.6561463E+00
5.7361197E+00 3.6561463E+00 5.7361197E+00 3.6561463E+00
-1 0 0.0000000E+00 0.0000000E+00
PAL 2
2 4.9458661E+00 2.9404526E+00 6.5575781E+00 4.3676176E+00
0 0 0 1 1 2
1 4.9458661E+00 2.9404526E+00 6.5575781E+00 4.3676176E+00
-1 1 1
-1 0 0 0 0 0 0
TOL 2
1 1 2.0000001E-03
2 2 0.0000000E+00
3 2 0.0000000E+00
4 2 0.0000000E+00
5 2 0.0000000E+00
6 2 1.6117120E-02
7 2 1.6117120E-03
8 2 1.6117120E-03
9 2 1.6117120E-03
10 2 1.6117120E-03
-1 0 0 0 0 0 0
SIN 2
EOX
LOG 2
200511141214 0 0 0user ARCEDIT T:\GARBAGE\THE_POLY
~
200511141214 0 0 0user ARCEDIT T:\GARBAGE\THE_POLY
~
200511141214 0 0 0user build the_poly
~
EOL
IFO 2
THE_POLY.BND XX 4 4 16 1
XMIN 4-1 14-1 12 3 60-1 -1 -1-1 1-
YMIN 4-1 54-1 12 3 60-1 -1 -1-1 2-
XMAX 4-1 94-1 12 3 60-1 -1 -1-1 3-
YMAX 4-1 134-1 12 3 60-1 -1 -1-1 4-
4.9458661E+00 2.9404526E+00 6.5575781E+00 4.3676176E+00
THE_POLY.PAT XX 4 4 16 2
AREA 4-1 14-1 12 3 60-1 -1 -1-1 1-
PERIMETER 4-1 54-1 12 3 60-1 -1 -1-1 2-
THE_POLY# 4-1 94-1 5-1 50-1 -1 -1-1 3-
THE_POLY-ID 4-1 134-1 5-1 50-1 -1 -1-1 4-
-2.2184148E+00 5.9709468E+00 1 0
2.2184148E+00 5.9709468E+00 2 1
THE_POLY.TIC XX 3 3 12 4
IDTIC 4-1 14-1 5-1 50-1 -1 -1-1 1-
XTIC 4-1 54-1 12 3 60-1 -1 -1-1 2-
YTIC 4-1 94-1 12 3 60-1 -1 -1-1 3-
1 4.5521653E-01 4.9458661E+00
2 6.5329719E+00 4.7490153E+00
3 2.9527557E-01 4.1830707E-01
4 7.1604323E+00 2.9527557E-01
EOI
EOS
===================================================



On 11/14/05, Kirk R. Wythers <kwythers at umn.edu> wrote:
>
> I am using the v.in.e00 script to import a large number of .e00
> files. One nuisance I face is that I do not know what type each file
> happens to be. Some files I try type=area only to get the
>
> Importing areas...
> ERROR: Layer 'ARC' not available
> An error occurred. Stop.
>
> message. In those situations I try type=point, and everything works
> fine. Does anyone know of a clever way to test for what the file type
> is before hand? If this is possible I could script this whole process.
>
> Thanks,
>
> Kirk
>
>
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