Carson Farmer wrote:
This is certainly where I would like to see manageR go someday! But
unfortunately this would entail programming in C, which requires someone
much more skilled than myself!
For now I simply use it instead of jumping between the two applications...
Your suggestion about displaying sp objects was a topic of discussion
for the QGIS bridge2R team (of which I am a member), but we ended up
putting this aside, as we felt that the average QGIS user would rather
have all the R stuff happen 'behind the scenes' on their input vector
layers directly, rather than knowingly interacting with R.
I cannot but disagree here. "QGIS user have all the R stuff happen
'behind the scenes'" because they cannot have it on the scenario. I strongly
recommend having a look to GeoDa to feel the power of interactive
exploratory geographic data analysis. It is a fundamental step for
thinking and generating hypothesis that are formally tested afterwards
and then interactively displayed again. Unfortunately, GeoDa does not
have a real geographic display, as would be the case of QGis, and does
not have the amazing flexibility of R. I note
that GeoDa is becoming OS at some point, and could be an excellent
source of inspiration.
Also, note how powerful would be applying R syntaxis to the data tables
associated to vector data. This is very easy with the "data slot" of R
SpatialDataFrame objects, but there is always the annoying step of going
through the shp export to display in QGIS (although I think that your
Rmanage makes easier the step).
I tend to
agree with this idea for that particular project, but for manageR,
displaying sp objects would be great!
Yes!
I think in the end this would
require an ogr/gdal driver for sp objects as Barry Rowlingson has
previously suggested here, and in the r-sig-geo lists.
I have started to look at some brushing and linking functions using the
iPlots R package, and should hopefully be able to implement some of
these things in the future...?
Actually, perhaps we could make people from Rosuda get interested on
developing an "igeoplots" package!
Agus
Carson
Agustin Lobo wrote:
Thanks Carson, just knowing that this is an R console is enough.
Now, after making a simple plot(), I'm just dreaming: if we could
display sp objects directly, not only avoiding the intermediate
shp file but being able of plotting columns of the dataframe
as statistical graphics in R...
and soon being able to interact between the R plot and the
geographic display (a linked brushing, for example), tools
like in GeoDa but with a real GIS diaplay...
Great job!
(I'm forwarding the r-sig-geo list just for them
to know your developments)
Agus
--
Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: [EMAIL PROTECTED]
http://www.ija.csic.es/gt/obster
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