Hi,
   'ylim', is a graphical prameter and  in the plot command should do the
job, but did not. However, I did go through a few other links but all point
to either plot to spplot, and tried a few things but unable to develop the
plot that I want. I understand that it is a small trick but am unable to
figure it out (do I need to provide ylim in a different format?) Greatly
appreciate any help.
Thanks,
Satish

>test=readShapePoly( "**US102ClimateDivisions.shp")
> testS=as(testshpol,"SpatialPolygons")
> plot(testS)
> plot(testS,ylim=c(30,50))

plot(testS) and plot(testS,ylim=c(30,50)) are producing almost similar
graph.

> test_sp=SpatialPolygonsDataFrame("**US102ClimateDivisions.shp")
Error in stopifnot(length(Sr@polygons) == nrow(data)) :
  trying to get slot "polygons" from an object of a basic class
("character") with no slots

On Thu, Feb 9, 2012 at 3:39 PM, Alexandre Villers <
villers.alexandre@gmail.com> wrote:

> Hi,
>
> You should have a look at the documentation (e.g. manuals) available on
> graphics in R (on the CRAN website, hhttp://cran.r-project.org/) to learn
> how to set the parameters of a R graphic, and more specifically at the
> spplot function (from package sp) for spatial objects (the ASDAR book of
> Roger Bivand et al. is worth the look  http://www.springer.com/**
> public+health/book/978-0-387-**78170-9<http://www.springer.com/public+health/book/978-0-387-78170-9>).
> There are also several web sites showing this: just google "plot spatial
> data r" and you should find what you are looking for.
>
> HTH
>
>
> Alex
>
>
> Le 09/02/2012 22:19, satishr a écrit :
>
>  Hi,
>>   I read ESRI shapefile and related files using readOGR, and was able to
>> plot successfully but am unable to customize the plot. The data is
>> attached
>> and corresponds to US climate divisions.
>>   The below mentioned second command supposed to produce a plot of sub
>> region of the USA but it's not. I tried using readShapePoly but no
>> success.
>> In addition, I found a lot of space on top of the picture and want to
>> reduce
>> it, but not sure how to do it. I request you to provide suggestions.
>> Thanks,
>> Satish
>>
>>
>>  climagdiv = readOGR("**US102ClimateDivisions", "US102ClimateDivisions")
>>>
>> OGR data source with driver: ESRI Shapefile
>> Source: "US102ClimateDivisions", layer: "US102ClimateDivisions"
>> with 102 features and 5 fields
>> Feature type: wkbPolygon with 2 dimensions
>>
>>> plot(climagdiv)
>>> plot(climagdiv,ylim=c(20,40))
>>>
>>
>>  climagdiv = readShapePoly("**US102ClimateDivisions.shp")
>>> plot(climagdiv)
>>> plot(climagdiv,ylim=c(20,40))
>>>
>> Data:
>> http://r-sig-geo.2731867.n2.**nabble.com/file/n7270579/**
>> US102ClimateDivisions.zip<http://r-sig-geo.2731867.n2.nabble.com/file/n7270579/US102ClimateDivisions.zip>
>> US102ClimateDivisions.zip
>>
>> --
>> View this message in context: http://r-sig-geo.2731867.n2.**
>> nabble.com/unable-to-**customize-a-plot-produced-**from-a-shapefile-**
>> tp7270579p7270579.html<http://r-sig-geo.2731867.n2.nabble.com/unable-to-customize-a-plot-produced-from-a-shapefile-tp7270579p7270579.html>
>> Sent from the R-sig-geo mailing list archive at Nabble.com.
>>
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>>
>>
>
>
>

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