Issue 2385

When trying to convert an Excel workbook with two dataseries in a chart 
Starcalc does not convert the subranged X-aksis from the second series 
correctly. It looks like it uses the row-number for the  second series (when 
having the two datasets in separete sheets). When having the dataseries in the 
same sheet you don't even get a working chart. The following example 
illustrates the problem. Column A and C are the X-aksis and column B and C are 
two series of data. A C are time akses.
A        B      C         D
1	10	2.5	600
2	20	4.5	700
3	30	6.5	800
4	40	8.5	900
5	50		
6	60		
7	70		
8	80		
9	90		
10	100		

The problem occurs when converting an existing XY chart from Excel containing 
the two series with different X-akses. Also I have not found a way to chart the 
series in Starcalc. It seams like the functionallity of using two subsetted X-
akses are missing.
It is used very often to display two data sets from 2 csv-files with 
measurements from independent gauges having an overlap in time (X-aksis).
In Excel you can choose individual X-akses for each data series, I can't find 
this in Starcalc. That, I think, would solve the problem.