One option is to create or use a Crystal Reports UFL (User Function Library).
Ken Hamady maintains a list of 3rd-party UFLs here.
Here is an image demonstrating how your string can be converted to a line or column chart by using a function from one of these UFLs. The function generates a chart image file (on-the-fly). The 'Graphic Location' expression of a dummy image is simply set to the path of the resulting image file.
One option is to create or use a Crystal Reports UFL (User Function Library). Ken Hamady maintains a list of 3rd-party UFLs here.
Here is an image demonstrating how your string can be converted to a line or column chart by using a function from one of these UFLs. The function generates a chart image file (on-the-fly). The 'Graphic Location' expression of a dummy image is simply set to the path of the resulting image file.