Check if a style string contains matplotlib format characters Returns false for named linestyles (solid, dashed, etc)
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=*), | intent(in) | :: | style_str | 
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=*), | intent(in) | :: | format_str | |||
| character(len=*), | intent(out) | :: | marker | |||
| character(len=*), | intent(out) | :: | linestyle |