This chart uses data from this spreadsheet. Import settings are as follows:
After the data is imported, I used the following SVG content as background:
I simply pasted it into the "Background SVG content" field:
One thing worth mentioning here is the viewBox attribute: viewBox="0 0 760 590". Why 760x590, you may ask?
As you can guess from the screenshot above, I picked the "Grid area only" option for the background, which tells about my intent to draw the background for the grid area only, leaving alone other areas like chart title/subtitle and category radio buttons. Before I started working on the background SVG, I have made a screenshot of the chart and measured the grid area - from the top of the "100+" bars to the bottom axis. It turned out to be (approximately) 760x590, so I used these dimensions for my SVG content.
If I wanted to create a background for the whole chart, I would create SVG content of size 800x800, which is the size of the chart.
One of the best things about this SVG background feature is the ability to tweak the background in the "Background SVG content" field and see the changes right away, like in a graphics editor.
Everybody is welcome to use this new feature, but please keep in mind it requires some basic knowledge of SVG format. Even if just want to use a PNG or JPG image as a background, you have to wrap it in an SVG:
Now just imagine what you can do with your chart's background! Photos, other charts, watermark images, animations, icons... Enjoy.