In the previous version of origin (Origin 7), the data selector tool could select a range of data from the graph and i could perform any kind of analysis or data manipulation only in that range of data, but in origin 8 the data selected between data selector markers doesnt work as always, and all the analysis and manipulation that i want to do, is expressed all over the graph...
what can i do to work only in the selected data?
for example: Use subtract straight line, only over selected data from the graph?