Select certain rows of data to plot with ggplot

[scott smith]

Hi,

simple one but I'm stumped...

I have a data set with 100 rows and a header row. I'm trying to plot
data rows 1-20 alone, (and then I'll plot 21-40..etc once this is
sorted)

so I can do it with qplot no problem:

qplot(myo_stress[1:20],sas_stress[1:20])

....but not with ggplot (it still shows all 100 data points):

ggplot(data,aes(myo_stress[1-20],sas_stress[1-20])) + geom_point ()

Any thoughts?
Scott

[Brandon Hurr]

How about:

ggplot(data[1:20,], aes(myo_stress, sas_stress)) + geom_point()

Should work... 

Brandon

Scott

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[scott smith]

great - thanks Brandon

Knew it was be something simple!!