DATA DISPLAY DEVICE, METHOD, AND PROGRAM, DATA STRUCTURE, AND RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a display device which is capable of quickly switching display formats per data set and allows easy comparative observation between even data sets displayed in different display formats, when displaying a plurality of data sets on a display screen.SOLUTION: Each data set is displayed on a display screen in a display format being either a graph format or a table format so that the data set has the same abscissa axis representing a variable axis as those of other data sets and is arranged in a vertical direction. Input of an instruction to switch a display format of at least one of a plurality of partial display regions in which the data set is displayed is accepted, and the partial display region about which the input of the instruction to switch the display format has been accepted is set so that a vertical width of the partial display region is equal to a vertical width of display of the data set in the display format after switching, which is preliminarily stored in association with the partial display region, and the data set is displayed in the set partial display region in the display format after switching.