Creating a Plot Window of a Particular Size

Creating a Plot Window of a Particular Size

Use dev.new(). (See this related question.)

plot(1:10)
dev.new(width=5, height=4)
plot(1:20)

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To be more specific which units are used:

dev.new(width=5, height=4, unit="in")
plot(1:20)
dev.new(width = 550, height = 330, unit = "px")
plot(1:15)

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edit additional argument for Rstudio (May 2020), (thanks user Soren Havelund Welling)

For Rstudio, add dev.new(width=5,height=4,noRStudioGD = TRUE)

OS-independent way of making a plot window of a specific size in pixels?

A little bit of a hack, but dev.size accepts units and so we can infer. We just for an instant open a display and get the size in both inches and pixel. We wrap it into a closure, so we can use it multiple times while just opening the device once.

convertInToPx<-function() {
    dev.new()
    insize<-dev.size(units="in")
    pxsize<-dev.size(units="px")
    on.exit(dev.off())
    ratio<-insize/pxsize
    function(width, height, inverse = FALSE) {
        if (inverse)
            ratio<-1/ratio
        list(width = width*ratio[1], height = height*ratio[2])
    }
}
myconvert<-convertInToPx()
#results on my laptop
myconvert(320, 240)
# $width
# [1] 4.444444
#
# $height
# [1] 3.333333
myconvert(4.44444444444, 3.3333333, inverse=TRUE)
# $width
# [1] 320
#
# $height
# [1] 240

You can calculate the inches given the desired pixel size.

Specify Width and Height of Plot

I usually set this at the start of my session with windows.options:

windows.options(width=10, height=10)

# plot away
plot(...)

If you need to reset to "factory settings":

dev.off()
windows.options(reset=TRUE)

# more plotting
plot(...)

How can I set the window size of a plot window?

Yes, it is possible:

figure(1, 'position',[startx,starty,width,height]);
plot(0:20,sin(0:20));

[startx,starty] are the coordinates for the lower left corner of your figure (window).

You can also use the resolution option of the print function

print('aa.png','-dpng','-r300');

I guess the first solution might be better...

Regards

How do I set the matplotlib window size for the MacOSX backend?

For all backends, the window size is controlled by the figsize argument.

For example:

import matplotlib.pyplot as plt

fig, axes = plt.subplots(5, 5, figsize=(12, 10))
plt.show()

If you're creating the figure and subplots separately, you can specify the size to plt.figure (This is exactly equivalent to the snippet above):

import matplotlib.pyplot as plt

fig = plt.figure(figsize=(12, 10))
for i in range(1, 26):
    fig.add_subplot(5, 5, i)
plt.show()

In general, for any matplotlib figure object, you can also call fig.set_size_inches((width, height)) to change the size of the figure.

How to change current Plot Window Size (in R)

Here is a my solution to this:

resize.win <- function(Width=6, Height=6)
{
        # works for windows
    dev.off(); # dev.new(width=6, height=6)
    windows(record=TRUE, width=Width, height=Height)
}
resize.win(5,5)
plot(rnorm(100))
resize.win(10,10)
plot(rnorm(100))

Setting the size of the graphics window (plot size) in R

You can initialize an empty plot and then put your line segments into this plot:

# empty plot
plot(NULL, ylim=c(-1,2), xlim=c(-1,4), ylab="something", xlab="the x axis")
# add line segments
segments(0, 1, 3)
segments(0, 0.5, 2)

This produces

To remove everything except the line segments, start with

plot(NULL, ylim=c(-1,2), xlim=c(-1,4), ylab="", xlab="", xaxt="n", yaxt="n", bty="n")

You can find references to each of these arguments in the help(par) file.

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