Re: [GRASS-user] creating network only input points

2010-11-07 Thread Ricardo Rodríguez
hi, thanks for answering

to create the network I have a layer of segments and other points, I
say put the points in a different and so is entering, so I worry that
the network is not exclusively think my point  :S , you suggest.

I use this instruction that in grass gis 65 svn


*v.net in=lines points=nodes  alayer=lines  nlayer=points out=network*


thanks for your help

Ricardo Rodríguez
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[GRASS-user] creating network only input points

2010-11-05 Thread Ricardo Rodríguez
hello.
how to create a network so that nodes are only the input points , as this
grass gis adding nodes that make noise in my calculations, as are the
beginning and end of each line and  points outside the same network, this to
be, and how I can make a network with my real points only.

 I am using grass gis 65 svn in ubuntu linux of 64 bit

Thanks for your answers

Ricardo Rodríguez
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[GRASS-user] v.in.ogr and g.region trouble coordenate

2010-10-21 Thread Ricardo Rodríguez
hello.
 how to make g.region and v.in.ogr use the same projection that an incoming
file. since at run-d g.region v.in.ogr and maintaining the coordinates but
not the coordinate system, given the same coordinate system of the lease,
what should I do to keep your incoming file coordinate system .


thanks for your help and attention

Ricardo Rodríguez
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Re: [GRASS-user] v.in.ogr and g.region trouble coordenate

2010-10-21 Thread Ricardo Rodríguez
hi, thanks for answering I understand your answer but if my location has an
arbitrary coordinate system, there will be no way to keep the coordinate
system of the incoming file

Ricardo Rodríguez
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[GRASS-user] v.in.ogr and g.region trouble coodinate system

2010-10-15 Thread Ricardo Rodríguez
hi all, I have a problem with g.region, since by using v.in.ogr, get the
coordinates but leaves the geographic projection and the projection of the
files is a flat projection.

 how to maintain not only the coordinates only, but also the coordinate
system?.


thanks for your attention and help

Ricardo Rodríguez
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[GRASS-user] spgrass trouble in rpy and rpy2

2010-10-07 Thread Ricardo Rodríguez
hi all, I have problems with loading package in  rpy2 in python, I get the
following errors. would have to do so you can load these package.

SPGRASS6 in Rpy2

Traceback (most recent call last):
  File /usr/local/lib/python2.6/dist-packages/pywps/Wps/Execute.py, line
560, in executeProcess
processError = self.process.execute()
  File
/usr/local/lib/python2.6/dist-packages/pywps/processes/centralidad.py,
line 126, in execute
)
  File /usr/lib/python2.6/dist-packages/rpy2/robjects/__init__.py, line
536, in __call__
res = self.eval(p)
  File /usr/lib/python2.6/dist-packages/rpy2/robjects/__init__.py, line
423, in __call__
res = super(RFunction, self).__call__(*new_args, **new_kwargs)
RRuntimeError: Error in library(spgrass6) : there is no package called
'spgrass6'
Error in library(spgrass6) : there is no package called 'spgrass6'


thanks  for your help and time

Ricardo Rodríguez
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[GRASS-user] custom reports

2010-10-01 Thread Ricardo Rodríguez
hi all, how I can create my own reports, for example, if I have
v.net.centrality which creates 4 new attributes, as I can get a report with
the results of this calculation in an orderly manner and that the report has
a header as desire, you can create pdf directly, but as I can do it in plain
text.

tahnks for your help and time

Ricardo Rodríguez
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[GRASS-user] location for temporal files

2010-10-01 Thread Ricardo Rodríguez
hi all, how I can create a temporary location for maps so that everything is
calculated using the coordinate system which are the base files.

ideas?

thank you all for your time and help

Ricardo Rodríguez
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[GRASS-user] OBDC connection with postgresql in ubuntu 10.04 64 bits

2010-10-01 Thread Ricardo Rodríguez
hi all, how I can create ODBC connections with postgresql in Ubuntu 10.04
of 64 bits, since the ODBC plugin for postgresql is very different from what
is documented to someone already done, I could explain it.

thank you all for your time and help

Ricardo Rodríguez
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[GRASS-user] matrices of distances in attribute tables

2010-09-15 Thread Ricardo Rodríguez
hi all, is there any way to insert the results of the distance matrix
v.distances-pa in the database attribute points, but not in a single
column but a table and each column would be the distance from one point to
the other, additionally also like to add the result of shortestpath pars
for all in the same way, but in the same order as if a distance matrix.

this is to compare how easy or difficult is it to travel from one point to
another.

thanks for your answers

Ricardo Rodríguez
Univalle
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[GRASS-user] bug in v.net

2010-09-02 Thread Ricardo Rodríguez
hello all, I found a bug in the script v.net creates more nodes to be
created, for example using the Gisdemo_ncspm mapaset creating a network
between the layer of streets and schools in this mapaset schools are 169,
but the resulting network appears with 49 746 nodes this is a mistake
recording advised me to correct it or what version of GRASS GIS is in good
condition and has the scripts of centrality and short cuts for all couples

thanks for the support and help

Ricardo Rodríguez

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[GRASS-user] v.net error

2010-08-30 Thread Ricardo Rodríguez
hello, I have a question about the command v.net think that is creating
additional nodes that are not related to the network, for example if they
enter 36 points out 136 nodes, but there are 100 nodes that are fabricated
and has nothing to do with the original or network, someone had this same
error as I can correct it, I use the svn version 6.5 of Grass gis

thanks for the help

Ricardo Rodríguez
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[GRASS-user] rpy proceses

2010-08-24 Thread Ricardo Rodríguez
Hello everyone I have a question I can suggest tutorials or manuals that
explain how to work rpy and grass at the same time.
thanks for the help and attention

Ricardo Rodríguez
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[GRASS-user] work with wfs layer

2010-08-24 Thread Ricardo Rodríguez
Hello everyone I have a question you can work in grass gis directly with wfs
layers or intermediaries such as oswlib necessary.

thanks for the help and attention

Ricardo Rodríguez
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[GRASS-user] attributes in networks

2010-08-06 Thread Ricardo Rodríguez
hello all, I have a problem with the command v.net.path v.net and how you
can add attributes to the network or as the network can be created with the
attributes of the points and segments.

thanks for your answers I worked with Grass Gis 6.5svn

Ricardo Rodríguez
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[GRASS-user] creating new attributes

2010-07-29 Thread Ricardo Rodríguez
hello all, I tried to make calculations between attributes and insert the
results in new columns, in vector files, but can not find an easy way to do
also is very difficult to edit or delete an attribute not know if I'm doing
something wrong or is it something program, which surprises me the level of
complication that occurs to be a chore, been reviewing the documentation,
but can not find anything about it, but routine suggested for this sql based
standard of Grass gis.

  thanks for your answers

PS: I use the svn version 6.5

Ricardo Rodríguez

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[GRASS-user] attributes operations in a network

2010-07-14 Thread Ricardo Rodríguez
hello all, I have a question which is the best way to perform operations on
the attributes of a network and add the results to the layer of network
points such distances and other things.

thanks for your answers

Ricardo Rodríguez
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[GRASS-user] huff model

2010-06-02 Thread Ricardo Rodríguez
hello all, saw some of you to know if there is any implementation of huff
model for grass gis or failing that a script on it in Open Source software
arcgis but I do not want to work with such libraries.

thanks for your answers

Ricardo Rodríguez
Univalle
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[GRASS-user] surface cost

2010-06-02 Thread Ricardo Rodríguez
hello all, I have a question that can be evaluated as sustainable urban
accessibility of a zone map go through friction, but the only difference to
the examples in the book that the analysis I want to do is not over in many
respects an attractive location but several points of interest between
themselves, to facilitate the compression of what I want to analyze the
connection (and accessibility) among various warehouses or schools, both
topologically (factor map distance matrix) as the gravitational level ( huff
model), which commands do you recommend for this type of process.

code more than I would like to hear experiences and suggestions on this
topic

thanks for your attention, time and answers
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[GRASS-user] help(r.walk and r.cost and ogr)

2010-05-13 Thread Ricardo Rodríguez
hello all, I'm developing a pywps geoprocess in calculating accessibility, I
saw a command called r.walk and r.cost not how viable is to use my project
as: composite, I would like to share their experiences with these
commands, downside
is that the input data are vector network ogr I recommend to process
attributes to network with their raster, or that would be the most
appropriate to make these calculations, I just need a basic procedure

 thanks for your answers and suggestions

Ricardo Rodríguez
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[GRASS-user] isolines and kml files interpolation

2010-04-14 Thread Ricardo Rodríguez
hello all, a question, points are interpolated by any method in kml and get
a new file with interpolation or isolines in kml,
thanks for your answers

Ricardo Rodríguez
Ing. Topográfico
Univalle
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[GRASS-user] help(temporal tables)

2010-02-17 Thread Ricardo Rodríguez
hello a question, on grass you can work directly with databases that hold
temporary tables, plus there is any way to add new attributes to the same
tables.

thanks for any response

Ricardo Rodríguez
Ing. Topográfico
Univalle
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[GRASS-user] help(ordering attributes in various matrices)

2010-02-04 Thread Ricardo Rodríguez
hi all, I need some help with a script I'm doing if it's not possible to
order the attributes of a road network in matrix form as having ordered the
item id of the segments, as shown below

(id)   0   1   2   3   4   5   6   7   8   9

0   t1 t2 t3 t4 t5 t6  t7 t8 t9 t10

1   t1 t2 t3 t4 t5 t6  t7 t8 t9 t10

2   t1 t2 t3 t4 t5 t6  t7 t8 t9 t10

3   t1 t2 t3 t4 t5 t6  t7 t8 t9 t10

4   t1 t2 t3 t4 t5 t6  t7 t8 t9 t10

5  t1 t2 t3 t4 t5 t6  t7 t8 t9 t10



thanks for your answers



Ricardo Rodríguez
Ing. Topográfico
Univalle
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