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XMM-Newton Science Analysis System


xmmselect (xmmselect-2.65) [xmmsas_20080701_1801-8.0.0]

Meta Index / Home Page / Description / Detailed layout of GUI / Column selection

Integer columns

Integer columns are suitable to serve as primary axis in image and spectrum/histogram extractions and, thus, have two associated check buttons left to it. To the right are two numerical, editable entry fields which determine the minimum and maximum allowed value of the quantity in that column. If the focus is set in a field, the user can simply type in new values or use the up and down arrows next to the field to increase or decrease the displayed value by 1. Pushing the button with the column name will then determine whether any of the fields has been changed, construct a valid selection expression of either form

    colname in [min, max]
    colname >= min
    colname <= max

and append this to the global expression in the top expression entry field. If the column possesses associated hard upper and/or lower limits these will be indicated in the attached text label and non compliant user inputs will not be accepted.