Sundar,

Thanks for your response.  I used the command below:

plot(0, 0, type = "n", xlim = c(0, 10), ylim = c(0, 6))

to set the Y axis appropriately and it worked.

John

Sundar Dorai-Raj wrote:
> 
> 
> John Fisler wrote:
> 
>> Hello,
>>
>> I am new to R and have read the documents related to graphics but have 
>> not come across a description of how to change the maximum scale on a 
>> graph.  Below is sample code that sets up a plot window with a 0 
>> Minimum to 10 Maximum, X and Y coordinate system:
>>
>> x <- c(1,2,3,4,5,6,7,8,9,10)
>> y <- c(1,1.5,2,2.5,3,3.5,4,4.5,5,5.5)
>> plot(0:10, 0:10, type = "n" )# setting up coord. system
>> points(x, y, col = "red", cex = 1.5)
>>
>> I now want to change the maximum Y axis scale to 6.  I am using the 
>> 'points' function to plot 'x' and 'y' because my 'real' data is X and 
>> Y coordinate based.  When I try to change the maximum Y scale to 6 as 
>> in the following code segment, I get the following error:
>>
>> plot(0:10, 0:6, type = "n" )# setting up coord. system
>> Error in xy.coords(x, y, xlabel, ylabel, log) :
>>         x and y lengths differ
>>
>> How do I change the maximum Y scale to 6?
>>
>> Thanks,
>>
>> John Fisler
>>
> 
> You should use ylim.
> 
> plot(0, 0, type = "n", xlim = c(0, 10), ylim = c(0, 6))
> 
> --sundar
> 
>

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