[R-sig-Geo] Question on histograms from Raster and RasterVIS packages

[Nuno Sá]

Hey Thomas!

Yes thanks, I know it works for the normal hist function which uses 3% of
all data (mind I am talking about rasters) which I am not sure that is a
good enough sample, I leave that question in the air

The problem is it does not work in rasterVIS (which does use all the
raster). The error it gives me is the following:

> abline(v=m.rst,col="blue",lwd=2)
Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) :
  plot.new has not been called yet

Regards!!
Thank you once again!
Nuno

On 18 November 2014 18:04, Thomas Adams <tea3rd at gmail.com> wrote:

> Nuno,
>
> This works for me:
>
> > require(stats)
> > set.seed(14)
> > x <- rchisq(100, df = 4)
> >
> >
> > hist(x)
> > meanx<-mean(x)
> > meanx
> [1] 3.734162
> > abline(v=meanx, col="red")
>
> Cheers!
> Tom
>
> On Tue, Nov 18, 2014 at 10:56 AM, Nuno Sá <nunocesardesa at gmail.com> wrote:
>
>> Hello!
>>
>> My aim is to add a "Median" or a "Mean" line to an histogram plot in R.
>>
>> The problem is the following:
>>
>> The "hist" function from the raster package uses a maximum of 100 000
>> values for generating the histogram but allows me to edit the plot, so I
>> can easily add a line within the plot using abline.
>>
>> The "histogram" function in rasterVIS uses all my dataset but does not
>> allow editing of the plot area, so I cannot use the abline function to add
>> this line (or I do not know how to do it).
>>
>> If you have an alternative or a solution to work around this, I am all
>> hears
>>
>> Thank you for any help in advance!
>> Ciao!
>> --
>>
>> Nuno César de Sá
>> +351 91 961 90 37
>>
>>         [[alternative HTML version deleted]]
>>
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>>
>
>
>
>
>


-- 

Nuno César de Sá
+351 91 961 90 37

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