[R] Micro-point with pch=16?

[Boris Steipe]

Since you won't be able to see the effect on-screen, how about a little script that post-processes the SVG?
B.


On 2014-04-07, at 7:07 AM, Андрей Парамонов wrote:

> 07.04.2014 12:51, Jim Lemon пишет:
>> On 04/07/2014 04:33 PM, Андрей Парамонов wrote:
>>> Hello!
>>> 
>>> I'm trying to plot a 3D dataset as a scatter-plot, coding Z-axis values
>>> with point size. I pass the following parameters to "plot" function:
>>> 
>>> type = 'p',
>>> pch = 16,
>>> cex = intensity/max(intensity)
>>> 
>>> In my dataset, max(intensity)/min(intensity) is ~4000. However, visual
>>> points vary in radius by no more then 100 probably. Albeit default
>>> device isn't good at displaying micro-points, other devices (pdf, svg)
>>> can display such points just fine.
>>> 
>>> Is there a way to produce micro-points with cex=0.001 and less?
>>> 
>> Hi Andrey,
>> As the points help page says:
>> 
>> What happens for very small or zero values of cex is device-dependent:
>> symbols or characters may become invisible or they may be plotted at a
>> fixed minimum size.
> 
> Indeed, for svg device micro-points are plotted at fixed minimal size.
> But is there a way to work-around this limitation, for svg device?
> 
> Best wishes,
> Andrey Paramonov
> 
> 
> -- 
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.