[R-sig-Geo] Problem with "image" function

Cristina Silva csilva at ipimar.pt
Mon Jul 25 13:26:18 CEST 2011


Thank you for your e-mail. I'm working in Windows environment and had 
never used a patched version before. It worked.

Regards,

Cristina

On 23/07/2011 08:45, lancelot wrote:
> Update R to the latest patched version.
>
> R
>
> Le 22/07/2011 19:58, Cristina Silva a écrit :
>> Dear list members,
>>
>> I have a SpatialGridDataFrame with sea depths. I have previously plotted
>> this object using "image" with a grey scale. I have used exactly the
>> same script and now the result is crossed by horizontal white lines.
>>
>> As the script used was based in chunk no. 91 of cm_mod.R (book ASDAR,
>> figure 2.7), I repeated this script
>>
>>> oopar <- par(mar=c(1,1,1,1)+0.1)
>>> grys <- grey.colors(8, 0.55, 0.95, 2.2)
>>> image(auck_el1, "band1", col=grys)
>>> plot(auck_gshhs, add=TRUE, pbg="white")
>>> transect_sp <- 
>>> SpatialPoints(coords=cbind(seq(174.458,175.3,0.000833333),
>>> c(-37.03625)), proj4string=CRS("+proj=longlat +ellps=WGS84"))
>>> plot(transect_sp, add=TRUE, pch="-", cex=2)
>>> legend_image(c(174.2,174.25), c(-37.5,-37.2), auck_el1$band1,
>>> vertical=TRUE,
>>> offset.leg=0.8, col=grys)
>>> par(oopar)
>>
>> and the result was also crossed by the same white horizontal lines.
>>
>> I am using R version 2.13.1. I didn't have any problems with previous
>> versions.
>>
>> Thanks for your attention
>>
>> Cristina
>>
>


-- 
------------------------------------------
Cristina Silva
INRB/L-IPIMAR
Unidade de Recursos Marinhos e Sustentabilidade
Av. de Brasília, 1449-006 Lisboa
Portugal
Tel.: 351 21 3027096
Fax: 351 21 3015948
csilva at ipimar.pt



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