//Although in general it is a bad idea to change the model from within the view this is exceptionally the best place to do this special conversion.
//When a view update is requested (what happens for creating the metafile or displaying
//the chart in edit mode or printing) it is most likely that all necessary information are available - like the underlying spreadsheet data for example.
//Those data is important for the correct axis lable sizes which are needed during conversion.
//Those data are important for the correct axis label sizes which are needed during conversion.