Hi Brian
Hello,
I'm new to GRASS (and to GIS). I'm having trouble importing a vector file (using v.in.ogr) of the Everglades coastline in Florida, USA. The coastline is very irregular with many small islands. My machine has been working for three days, appears to be making progress (e.g., the line number at the bottom of the output shown below keeps increasing), albeit slowly. I estimate that it will take about a week to complete this import. I'm using Grass 6.0 on Mac OSX and the output is displayed below. My specific questions are:
1. Should I wait a week for this to complete, e.g., is it likely to successfully complete this import, or is the long time required indicative of a problem?
2. Is there a faster way of accomplishing this import?
Thanks for your help,
Brian
v.in.ogr dsn=/Users/PROJECTS/ENP/Plot_Info/GIS/PaulsCD/k24bound.shp output=k24bound
A datum name nad27 (North_American_Datum_1927) was specified without transformation parameters.
WARNING: Non-interactive mode: the GRASS default for nad27 is
towgs84=-22.000,157.000,176.000.
Projection of input dataset and current location appear to match.
Proceeding with import...
Layer: k24bound
-----------------------------------------------------
Building topology ...
18233 primitives registered
Building areas: 100%
18233 areas built
18233 isles built
Attaching islands: 100%
Attaching centroids: 100%
Topology was built.
Number of nodes : 18233
Number of primitives: 18233
Number of points : 0
Number of lines : 0
Number of boundaries: 18233
Number of centroids : 0
Number of areas : 18233
Number of isles : 18233
Number of areas without centroid : 18233
-----------------------------------------------------
WARNING: Cleaning polygons, result is not guaranteed!
Building topology ...
Topology was built.
Number of nodes : 18233
Number of primitives: 18233
Number of points : 0
Number of lines : 0
Number of boundaries: 18233
Number of centroids : 0
Number of areas : -
Number of isles : -
-----------------------------------------------------
Break polygons:
Registering points ... 745775
All points (vertices): 764031
Registered points (unique coordinates): 745775
Points marked for break: 18254
Breaks: 65
-----------------------------------------------------
Remove duplicates:
Duplicates: 0
-----------------------------------------------------
Break boundaries:
Intersections: 297999 (line 89173)
This is an old problem from grass 5.7. Grass with some shape files (only some) goes to infinite loop in Mac OS X only.
This is a bug unresolved: send a new report in the bug list at http://grass.itc.it/bugtracking/bugreport.html with the description.
Try this method: open this shape in Jump (you see the link in my site below), check the draw and the data and resave this shape file with a new name. Inside Jump there is a my doc to export shape file from Jump. Now import this new shape file inside Grass and check. Sometime it works.
Remember: in OS X the time to import a big shape files depends from MHz but it's fast. Your problem is a bug in Grass with some shape files and if you see all this time you Stop the Process of v.in.ogr from Process Viewer (in Utility).
Bye
--
________________________________________________________________________
|| Lorenzo Moretti e-mail: lorenzo.moretti@bologna.enea.it ||/|/| ENEA prot/idr Web: http://wwwamb.bologna.enea.it/ || | via Don Fiammelli, 2 FTP: ftp://ftpamb.bologna.enea.it/ (res.)
~~~~~~ 40128 BOLOGNA - ITALY Ph: +39-0516098086 Fax: +39-0516098131
Download GRASS for MAC OS X: http://wwwamb.bologna.enea.it/forgrass/
________________________________________________________________________
Dear Lorenzo,
Thank you for your reply. I installed the Jump software as you suggested, opened the old shape file, and saved it under a new name (still .shp) in a new folder. When I tried importing it into Grass, the error now was:
ERROR: Projection of dataset does not appear to match current location.
I don't have this error when using the original shape files.
Are there any other work arounds? Can I try importing this vector file using a different format such as .e00?
Thanks again,
Brian
At 5:56 PM +0200 4/18/05, Lorenzo Moretti wrote:
Hi Brian
Hello,
I'm new to GRASS (and to GIS). I'm having trouble importing a vector file (using v.in.ogr) of the Everglades coastline in Florida, USA. The coastline is very irregular with many small islands. My machine has been working for three days, appears to be making progress (e.g., the line number at the bottom of the output shown below keeps increasing), albeit slowly. I estimate that it will take about a week to complete this import. I'm using Grass 6.0 on Mac OSX and the output is displayed below. My specific questions are:
1. Should I wait a week for this to complete, e.g., is it likely to successfully complete this import, or is the long time required indicative of a problem?
2. Is there a faster way of accomplishing this import?
Thanks for your help,
Brian
v.in.ogr dsn=/Users/PROJECTS/ENP/Plot_Info/GIS/PaulsCD/k24bound.shp output=k24bound
A datum name nad27 (North_American_Datum_1927) was specified without transformation parameters.
WARNING: Non-interactive mode: the GRASS default for nad27 is
towgs84=-22.000,157.000,176.000.
Projection of input dataset and current location appear to match.
Proceeding with import...
Layer: k24bound
-----------------------------------------------------
Building topology ...
18233 primitives registered
Building areas: 100%
18233 areas built
18233 isles built
Attaching islands: 100%
Attaching centroids: 100%
Topology was built.
Number of nodes : 18233
Number of primitives: 18233
Number of points : 0
Number of lines : 0
Number of boundaries: 18233
Number of centroids : 0
Number of areas : 18233
Number of isles : 18233
Number of areas without centroid : 18233
-----------------------------------------------------
WARNING: Cleaning polygons, result is not guaranteed!
Building topology ...
Topology was built.
Number of nodes : 18233
Number of primitives: 18233
Number of points : 0
Number of lines : 0
Number of boundaries: 18233
Number of centroids : 0
Number of areas : -
Number of isles : -
-----------------------------------------------------
Break polygons:
Registering points ... 745775
All points (vertices): 764031
Registered points (unique coordinates): 745775
Points marked for break: 18254
Breaks: 65
-----------------------------------------------------
Remove duplicates:
Duplicates: 0
-----------------------------------------------------
Break boundaries:
Intersections: 297999 (line 89173)
This is an old problem from grass 5.7. Grass with some shape files (only some) goes to infinite loop in Mac OS X only.
This is a bug unresolved: send a new report in the bug list at http://grass.itc.it/bugtracking/bugreport.html with the description.
Try this method: open this shape in Jump (you see the link in my site below), check the draw and the data and resave this shape file with a new name. Inside Jump there is a my doc to export shape file from Jump. Now import this new shape file inside Grass and check. Sometime it works.
Remember: in OS X the time to import a big shape files depends from MHz but it's fast. Your problem is a bug in Grass with some shape files and if you see all this time you Stop the Process of v.in.ogr from Process Viewer (in Utility).
Bye
--
________________________________________________________________________
|| Lorenzo Moretti e-mail: lorenzo.moretti@bologna.enea.it ||/|/| ENEA prot/idr Web: http://wwwamb.bologna.enea.it/ || | via Don Fiammelli, 2 FTP: ftp://ftpamb.bologna.enea.it/ (res.)
~~~~~~ 40128 BOLOGNA - ITALY Ph: +39-0516098086 Fax: +39-0516098131
Download GRASS for MAC OS X: http://wwwamb.bologna.enea.it/forgrass/
________________________________________________________________________
--
*********************************************************************
Brian Beckage
Department of Botany
University of Vermont
Marsh Life Science Building
Burlington, VT 05405
Phone: 802 656-0197
Fax : 802 656-0440
email: Brian.Beckage@uvm.edu
web : www.uvm.edu/~bbeckage
*********************************************************************
On Mon, 18 Apr 2005 19:38:55 -0400
Brian Beckage <Brian.Beckage@uvm.edu> wrote:
Dear Lorenzo,
Thank you for your reply. I installed the Jump software as you
suggested, opened the old shape file, and saved it under a new name
(still .shp) in a new folder. When I tried importing it into Grass,
the error now was:
ERROR: Projection of dataset does not appear to match current location.
I don't have this error when using the original shape files.
Are there any other work arounds? Can I try importing this vector
file using a different format such as .e00?
Thanks again,
Brian
Click on the override projection button if you are importing through the gui or use -o if you are using command line. This will work fine if your projections actually match but the shape file is lacking the information.
T
--
Trevor Wiens
twiens@interbaun.com
The significant problems that we face cannot be solved at the same
level of thinking we were at when we created them.
(Albert Einstein)