Differences

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--- jvs:cigal:showplay:manual:chapter1:images [2013/08/20 21:03]
voyvodic created
+++ jvs:cigal:showplay:manual:chapter1:images [2023/02/23 18:43] (current)
@@ Line 2: / Line 2: @@
 ===== Manipulating how images are displayed in a real-time paradigm =====
-You can modify the display of image stimuli in a ShowPlay paradigm by changing the values of the display control variables.  Some of these can be changed interactively using the **Display* menu.
+You can modify the display of image stimuli in a ShowPlay paradigm by changing the values of the display control variables.  Some of these can be changed interactively using the **Display** menu.
-**Display control variables**
+**Display control variables:**
   * flipflag - 0=default, 1=horizontal flip, 2=vertical flip, 3=flip both
   * widscale - horizontal size scale factor (default=1.0)
   * hgtscale - vertical size scale factor (default=1.0)
   * rgbscale - color brightness scale factor (default=1.0)
+Note: These display control variables only work properly if your stimuli are images (i.e., JPEG or PCX files). They are applied when the images are pre-loaded just before running the paradigm. Explicit text stimuli and videos do not get pre-loaded so these display control variables do not currently work for such stimuli.  If you need to flip or scale text stimuli you should first save each stimulus as a JPEG image.
 **See Also:**\\

Brain Imaging & Analysis Center