R help - Sep 2000 - (Newbie) using par() to regulate viewing area in graphs

Hello:

I should first apologize for the very basic question, but I ought to
start from somewhere [embarrassed grin].

I am using R-1.0.0 in a Windows 98 machine to plot some graphs. I
tried to apply a "zoom in" in some portions of the graph using say
'par(yaxp=c(0.35,0.40,5))' but nothing happens, no error msg, no
update in the active graphics device. What should be the procedure to
"zoom in" in a graph?

BTW, besides the manuals that come with R ("An introduction to R",
"R
Reference Manual", "R Extension Writer's Manual", and the
"Data
Analysis and Graphics Using R - An Introduction", by Maindonald), is
there any source of information I should refer to before posting my
(newbie) questions to this list?

Thanks for all the assistance,

Eiji
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On 28.9.2000 10:49 Uhr, Norberto Eiji Nawa wrote:
> Hello:
> 
> I should first apologize for the very basic question, but I ought to
> start from somewhere [embarrassed grin].
No reason to be embarrassed, most of us started asking questions like this.
I still do.
> 
> I am using R-1.0.0 in a Windows 98 machine to plot some graphs. I
> tried to apply a "zoom in" in some portions of the graph using
say
> 'par(yaxp=c(0.35,0.40,5))' but nothing happens, no error msg, no
> update in the active graphics device. What should be the procedure to
> "zoom in" in a graph?
> 
AFAIK, this is not possible, since the axis ranges are saved with the plot
and can't be changed afterwards. You'll have to change the settings and
redo
the graph. If it's a complicated graph, you should pack the commands into a
small function. It's more convenient.

If you upgrade to R 1.11 (which I'd do anyway), you can save a plot to a
variable and recall it later (although not with different settings). Still,
you can then easily compare several versions.

Have fun

Kaspar

-- 

Kaspar Pflugshaupt
Geobotanisches Institut
Zuerichbergstr. 38
CH-8044 Zuerich

Tel. ++41 1 632 43 19
Fax  ++41 1 632 12 15

mailto:pflugshaupt at geobot.umnw.ethz.ch
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http://www.geobot.umnw.ethz.ch

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