Canvas questions to load images

Sun Sep 16 16:36:52 UTC 2012

Thank you. I do not have access to the e-prime basic help, due to running a 
Windows-Vista, 64-bit system.  .hlp files are no longer recognized by 
Vista-32. I tried installing a tool that allows .hlp files to be read, but 
it somehow failing. Is there a workaround to this, so I can view the 
e-prime basic files?

Thanks,
Corona

On Sunday, September 16, 2012 11:39:37 AM UTC-4, Peter Quain wrote:
>
>  
> I cannot think of why might else you would crave this knowledge. The 
> documention, topic Canvas, will help understanding this code, you will need 
> to if it is Canvas that you wish to use
>
> At 01:31 AM 17/09/2012, you wrote:
>
> Thank you Alphonse, for the quick reply. More for the purpose of 
> understanding the code, than anything else, why do you repeat  cnvs.Copy 
> offScreenCnvs, myRect, myrect (with myrect twice)? More specifically, how 
> is this understood by e-prime? Also, I am guessing I do not have to include 
> a slideobject?
>
>
>
> On Sunday, September 16, 2012 10:59:26 AM UTC-4, alphonse wrote:
>
> -----------------------------------------------
> 'Prepare stimulus offscreen
> offScreenCnvs.LoadImage stim
>
> 'Define the copy area
> Dim myRect As Rect
> myRect.Left = xMargin
> myRect.Right = xMargin + 60
> myRect.Top = yMargin
> myRect.Bottom = yMargin + 60
>
> 'Copy prepared stimulus to screen
> cnvs.Copy offScreenCnvs, myRect, myRect
>  --------------------------------------------------------------------------
>
> At 12:39 AM 17/09/2012, you wrote:
>
> I am currently running a dot probe task with visual paired stimuli 
> (positive, negative). I have a two fold question pertaining to this task:
>
> 1) I have about 60 images in one of my trialprocs, and was therefore 
> advised to use the canvas option to preload images. I have had little 
> success with using this object, particularly because I do not entirely 
> understand the concepts of off-screen and on-screen canvas. I have managed 
> to write a small script with help from the references guides posted on the 
> e-prime website (as well as forums), but am stuck when it comes to the 
> following statement:
>
> 1.      When preparing the trial:
>
>  
>
> targetCanvas.LoadImage stim 
>
>  
>
> Image is loaded to the top left corner. We need to define 2 Rect Objects: 
> StimLoadRect and StimRect (see Rect object in the E-Basic Help), both the 
> size of the images to-be-loaded, but the StimRect at the (Left,Right, 
> Top,Bottom) coordinates where the stimulus will be displayed. When we copy 
> the image from the offline canvas to the online canvas, we will copy from 
> StimLoadRect to StimRect.
>
>  
>
> 2.      To run the stimulus:
>
>  
>
> Display.WaitForVerticalBlank
>
> c.setAttrib "StimOnset", clock.read
>
> cnvs.copy targetCanvas, stimLoadRect, stimRect
>
> sleep(stimDuration)
>
> Display.WaitForVerticalBlank
>
> Cnvs.clear ' or something else that erases the stimulus, can be done in 
> the following trial
>
>  
>
> Bolded lines: How do I create a stimLoadRect and stimRect image, a is 
> asked for? (I did find a script for creating a rect object, but am unsure 
> of how to specify dimensions).
>
> I assume that pre-defining images and their locations, means I do not have 
> to specify them as a SlideObject? (I am guessing I am completely wrong here 
> - please feel free to correct me) . I would also assume that the 
> stimDuration, must be defined as an attribute? 
>
>  
>
> Assuming I do not have to go through this convoluted path, I have another 
> question. If I could pre-load using the SlideImage and ImageDisplay 
> options, I am not sure how to specify the co-ordinates of where I want my 
> image to be in the properties section. I know this appears elementary, but 
> the actual size of the images are 424 X 283, but when running, part of the 
> images are cut off. When I looked at the properties of my slide object, I 
> had set the width at 25% . I assumed this was the co-ordinate location in 
> relation to the actual screen size. Guessing that this was an error on my 
> part, I reset the width to 100%, but that meant that when I looked at the 
> slideobject (with the dotted grid), one image seemed to complete cover the 
> other image. How do I fit both images, and make sure their dimensions 
> remain the same?
>
>
> I apologize for this rant. I only recently switched to e-prime from using 
> Inquisit, and am still trying to get a hang of this software tool.
>
>
> Thanks a ton for your reply,
>
> Corona
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "E-Prime" group.
> To post to this group, send email to e-p... at googlegroups.com.
> To unsubscribe from this group, send email to 
> e-prime+u... at googlegroups.com.
> To view this discussion on the web visit 
> https://groups.google.com/d/msg/e-prime/-/5pzrm9S1QnQJ.
> For more options, visit https://groups.google.com/groups/opt_out.
>  
>  
>
>
> -- 
> You received this message because you are subscribed to the Google Groups 
> "E-Prime" group.
> To post to this group, send email to e-p... at googlegroups.com <javascript:>
> .
> To unsubscribe from this group, send email to 
> e-prime+u... at googlegroups.com <javascript:>.
> To view this discussion on the web visit 
> https://groups.google.com/d/msg/e-prime/-/1AKNMHLxx88J.
> For more options, visit https://groups.google.com/groups/opt_out.
>  
>  
>

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msg/e-prime/-/fIy17qBfjrkJ.
For more options, visit https://groups.google.com/groups/opt_out.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listserv.linguistlist.org/pipermail/eprime/attachments/20120916/5b60ab3a/attachment.htm>