Workaround: Correctly Exporting Charts on Google Spreadsheet as Images using Google Apps Script
This is a sample script for correctly exporting the charts on Google Spreadsheet as the images using Google Apps Script. In the current stage, using Google Apps Script, when the charts on Google Spreadsheet are exported as the images, it seems that the exported images are not the same with the original one on Google Spreadsheet. About this, today, I could notice that I had answered for 2 questions. Q1, Q2 And also, I had already been reported this at the issue tracker. Ref
In this post, as the current workaround, I would like to introduce the method for exporting the chart on Google Spreadsheet as the same images with the original one.
As a sample situation, the following chart is used.