Helena,
(cc to grass5 for the archive)
On Tue, Oct 05, 2004 at 11:52:30PM -0400, Helena wrote:
I am trying to get myself started in 57 and test nviz so that it can be
submitted, but I need some help (or maybe I should read some manual
or tutorial).
Are you using the older Paudits version or does it already
contain the recent enhancements of 5.7/ogsf?
To test the 3d stuff I have created a 3d point file (see below) using
bugsites
in spearfish (elevation is from DEM and few have points below surface)
and imported it as
s.in.ascii bugsites3d input=bugsitesz.asci d=3
this creates a vector point file
I guess that v.in.ascii should be used.
"-z
create 3D file"
"
[ the coordinates in my example below are also for Spearfish]
echo "593493.1|4914730.2|123.1|studna
591950.2|4923000.5|222.3|kadibudka
589860.5|4922000.0|232.3|hruska
590400.5|4922820.8|143.2|mysi dira
593549.3|4925500.7|442.6|mineralni pramen
600375.7|4925235.6|342.2|mineralni silnice" | v.in.ascii -z zcol=3 catcol=0 \
out=mypoints3D columns='x double, y double, z double, label varchar(20)'
You may have to use fs= if you have different field separator.
but v.info indicates that B and T are 0, so it must have ingored d=3 upon
import
no, I guess because s.in.ascii is inappropriate.
I have just extended the HTML page of v.in.ascii, adding above
example.
However, when I modified the ascii file to 3d site format and imported it
with
v.in.sites, it worked. But I still won't get the basic statistics on the
file (probably my mistake as I have never used any DBM tools).
So, now we can try:
d.vect mypoints3D
d.vect mypoints3D disp=attr attrcol=label
# -> points with labels
#check DB:
echo "SELECT * from mypoints3D" | db.select
cat|x|y|z|label
1|593493.100000|4914730.200000|123.100000|studna
2|591950.200000|4923000.500000|222.300000|kadibudka
3|589860.500000|4922000.000000|232.300000|hruska
4|590400.500000|4922820.800000|143.200000|mysi dira
5|593549.300000|4925500.700000|442.600000|mineralni pramen
6|600375.700000|4925235.600000|342.200000|mineralni silnice
Works.
GRASS 5.7.cvs:/data/b_usr4/b_usr4/grassdata/spearfish/helena/site_lists >
v.univar bugsitesz3dt col=1
WARNING: Incompatible types, only number of features, minimum, maximum and
range can be calculated
DBMI-DBF driver error:
SQL parser error in statement:
SELECT cat, 1 FROM bugsitesz3dt
Error in db_open_select_cursor()
ERROR: Column type not supported
Yes, I guess that you didn't specify the column type when using
v.in.ascii (see my example above how to do that). By default it will
make every type in the DB a string as it cannot guess the column type.
v.univar mypoints3D col=z
WARNING: Incompatible types, only number of features, minimum, maximum and
range can be calculated
number of features with non NULL attribute: 6
number of missing attributes: 0
number of NULL attributes: 0
minimum: 123.1
maximum: 442.6
range: 319.5
which looks ok. IMHO the warning is confusing, but this could be improved.
g3.createwind says after it is finished -
There must have been an error (which I fixed right now in 5.3 and 5.7 CVS).
Now run g3.region to verify the settings.
but there is no g3.region in 5.7 (should that message just be removed?)
There is (for a few days), please update your 5.7 version.
When I get more familiar with 5.7 and the current 3d stuff I hope that I
will have fewer questions and rather provide some help.
Hope that it works now
Markus
)