Displaying/Generating Graphs In E-Prime

[Steve Lacey]

Thanks Cynthia,

It turns out that the easiest way to draw plots is to use the canvas
function, as you have suggested. I also submitted the question to PSTNET
and they said it was not possible to dynamically send data from eprime to
excel, plot the graphs, and then import them back into images on a slide
object during runtime.

Steve

At 10:46 AM 9/18/2002 -0500, Cynthia J. DeVore wrote:
>Steve,
>
>So far as I know, there isn't a readily available method for generating
>graphs.
>I have, however, developed something that performs a similar function. The
>"trick" is to reorient the Canvas space because down is up (positive number
>increase in the y-direction moving from top to bottom, rather than from bottom
>to top as we typically see in coordinate space).
>
>The code below is the core of the logic used to draw a histogram in which the
>low value is 3 and the high value is 18. (In this task, 3 dice are rolled and
>the sum is graphed.) XConst is the width of each bar. xbase is the location of
>the leftmost portion of the graph. ybase is the bottom of the graph (with the
>labels beneath this "bottom"). DiceTotalArray is an array that holds the
>frequency for each dice roll (3 to 18).
>
>For i = 3 to 18
>      OffScreenCnvs.Text xbase+(i*XConst), ybase, i
>      OffScreenCnvs.Text xbase+(i*XConst), ybase+20, DiceTotalArray(i)
>      ' draw a rectangle or a line
>      if DiceTotalArray(i) > 0 then
>          OffScreenCnvs.Rectangle xbase+(i*XConst),
>ybase-(DiceTotalArray(i)*YConst), XConst, DiceTotalArray(i)*YConst
>      end if
>Next i
>
>' draw a line for "zero"
>OffScreenCnvs.Line xbase+(3*XConst), ybase, xbase+(19*XConst), ybase
>
>If you want the whole program to pull apart, I'll send it to you.
>
>Cynthia
>
>Cynthia DeVore
>I/O Grad Student and E-Prime Consultant
>University of Minnesota, Minneapolis
>devo0023 at tc.umn.edu
>612-624-3601
>
>Steve Lacey wrote:
>
> > Hi,
> >
> > I am writing a script for a basic CRT experiment. After every block of
> > trials I want to provide feedback in the form of graphs. There will be
> > several graphs--one will plot RT by block number, another that will plot
> > accuracy by block number, ect.
> >
> > Any ideas about how I might do this? Is there a method within e-prime to do
> > this? Could I send the data to Excel, generate the plots there, and then
> > import them back into separate images in a slide object? If either of these
> > are possible, how would I do it?
> >
> > Thanks,
> > Steve