ExportOptionsJPEG computation and simulation

Question

Hi,Given this parameters:var exportOptions = new ExportOptionsJPEG();
exportOptions.antiAliasing = true;
exportOptions.horizontalScale = 500;
exportOptions.verticalScale = 500;
exportOptions.qualitySetting = 100;How did it come up with this properties(see dimensions and resolution properties)?May I know the computation for this?Also when exporting JPEG in illustrator, the UI show this:How can I simulate those values using the scripting way(ExportOptionsJPEG)

Doug A Roberts · Accepted Answer

It's 300 PPI RGB.I just wanted to know how to simulate the export JPEG in illustrator UI on ExportOptionsJPEG script.For example: on export UI I selected this options: 300 PPI RGB and then it produces an image with 1613x2682 dimension and 300x300 dpi. What values(vertical/horizontal scale) should I added to ExportOptionsJPEG script to produce the same image?That would suggest you are exporting from a 387 x 644 px document in Illustrator?As I said, there is no PPI setting in ExportOptionsJPEG.If you want a 1613x2682 px file, I suggest you create an artboard that size and use horizontal/verticalScale of 100. Provision for applying PPI appears to have been introduced with the Export for Screens options. See here for some discussion, especially Carlos's post:https://community.adobe.com/t5/illustrator-discussions/export-jpg-as-300-ppi/m-p/11244200

Test Screen Name · Answer

You did nothing to set ppi in your code. It is not calculated from your unrelated options. It is not set at all. 96 is a default shown by some viewers; others show a default of 72.

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