The dialog Array is used to perform the settings for a data set from a data file.
The button File is used to open a file selection dialog for selecting a data file. The path of the file is displayed right to the button. Selecting a file results in automatic determination of suitable values for the following settings.
In x column and y column the file columns for abscissa and ordinate values may be chosen. 0 corresponds to the first column.
When Error bar is checked the column chosen in Error column is used for displaying error bars. This column is also used in case of parameter fits of functions to the data sets for weighing the data points.
The Start index is the row index for the first data point to be displayed. 0 corresponds to the first row of the data file, not counting comment lines. Together with the Number of points the displayed portion of the file is selected.
Factors for x normalization and y normalization may be entered manually. These factors also may be determined automatically using Autoscale with checked Normalization in the dialog Frame.
Markers (Symbol <= 0) or lines (Symbol > 0) may be chosen to present the data points. This is done most convenient using the dialog Lines and Markers, to be opened with the button right to the spin box, which shows the actual line or marker.
The Color of lines or markers may be chosen using the dialog Select Color, opened with the colored button.
The dialog may be canceled without saving by use of the button Cancel. By using Apply changes are saved without closing the dialog. With OK changes are saved and the dialog is closed.