Changing the keyboard increment when...

Question

I would like to change the keyboard increment when attmpting to increase/decrease the size of an image using command-option-< and >
Currently it jumps in the oddest incrememnt, not even a whole number. Increasing the size from 100% makes the result 105.10100501000001% Where does THAT come from?
I'd like to be able to change it, to, say, 5% increments or 2% increments. Any guesses?

Answer 1

@Peter – I did not test with InDesign CS6, just CS5.5. I just doubleclicked in the Scripts Panel.
And my preferences were set to:
Scaling: Apply to Contents
Maybe this is just a CS5.5 issue. Had no time for further testing…
@Jongware –  finished one script, but did not test much.
The one that just scales frames + contents in increments of 1%, if contents is a graphic.
See for yourself:
//ScaleUP_by_increment_of_ONE_Percent_WITH_TRANSFORMATIONMATRIX.jsx
//Uwe Laubender
* @@@BUILDINFO@@@ ScaleUP_by_increment_of_ONE_Percent_WITH_TRANSFORMATIONMATRIX.jsx !Version! Mon Mar 11 2013 11:51:54 GMT+0100
//DESCRIPTION: Step of scaling UP: 1%
app.scriptPreferences.userInteractionLevel = UserInteractionLevels.interactWithAll;
app.doScript(_ScaleGraphicsOfSelection, ScriptLanguage.JAVASCRIPT, [], UndoModes.ENTIRE_SCRIPT, "Scale All Graphics of Selection: UP BY 1 PERCENT");
function _ScaleGraphicsOfSelection(){
var percentage = 1; //You can change the amount here
var sel = app.selection;
if(sel.length === 0){alert("There is nothing selected! Try again…");exit(0);};
for(var n=0;n<sel.length;n++){
    //Check, if the individual selected object is of type "Rectangle", "Oval" or "Polygon".
    //AND check, if the individual selected object has a graphic (objects without graphics should not be scaled!).
    //AND check, if the individual selected object is locked => we will not unlock the object to scale it.
    if(sel[n].constructor.name == "Rectangle"
        || sel[n].constructor.name == "Oval"
        || sel[n].constructor.name == "Polygon"
        && app.selection[n].graphics[0].isValid
        && app.selection[n].locked == false
        var currObject = sel[n];
        var currHScaleGraphic = currObject.graphics[0].horizontalScale;
        var currVScaleGraphic =currObject.graphics[0].verticalScale;
        var HFactor = ((currHScaleGraphic +percentage) / currHScaleGraphic);
        var VFactor = ((currVScaleGraphic +percentage) / currVScaleGraphic);
        var newTM = app.transformationMatrices.add({horizontalScaleFactor: HFactor, verticalScaleFactor: VFactor});
        currObject.transform(CoordinateSpaces.INNER_COORDINATES, AnchorPoint.CENTER_ANCHOR, newTM);
        //OPTIONAL:
        currObject.redefineScaling();
}; //END function "_ScaleGraphicsOfSelection()";
Uwe