Specifications

Adobe Photoshop CS6
JavaScript Scripting Reference JavaScript Object Reference 76
// create the output file
// first figure out which kind of line feeds we need
if ($.os.search(/windows/i) != -1) {
fileLineFeed = "Windows"
} else {
fileLineFeed = "Macintosh"
}
// create the output file accordingly
fileOut = new File("~/Desktop/Histogram.log")
fileOut.lineFeed = fileLineFeed
fileOut.open("w", "TEXT", "????")
// write out a header
fileOut.write("Histogram report for " + docRef.name)
// find out how many pixels I have
var totalCount = docRef.width.value * docRef.height.value
// more info to the out file
fileOut.write(" with a total pixel count of " + totalCount + "\n")
// channel indexer
var channelIndex = 0
// remember which channels are currently active
var myActiveChannels = app.activeDocument.activeChannels
// document histogram only works in these modes
if (docRef.mode == DocumentMode.RGB ||
docRef.mode == DocumentMode.INDEXEDCOLOR ||
docRef.mode == DocumentMode.CMYK) {
// activate the main channels so we can get the documents histogram
TurnOnDocumentHistogramChannels(docRef)
// Output the documents histogram
OutputHistogram(docRef.histogram, "Luminosity", fileOut)
}
// local reference to work from
var myChannels = docRef.channels
// loop through each channel and output the histogram
for (var channelIndex = 0; channelIndex < myChannels.length; channelIndex++) {
// the channel has to be visible to get a histogram
myChannels[channelIndex].visible= true
// turn off all the other channels
for (var secondaryIndex = 0; secondaryIndex < myChannels.length;
secondaryIndex++) {
if (channelIndex != secondaryIndex) {
myChannels[secondaryIndex].visible= false
}
}
// Use the function to dump the histogram
OutputHistogram(myChannels[channelIndex].histogram,
myChannels[channelIndex].name, fileOut)