An information processing device that performs data processing on measurement data measured by an analyzer based on operation information output from an operation section, and displays data processing results on a display section, wherein the analyzer comprises a spectrometer arranged to analyze the elements present on the surface of a sample and the measurement data relates to the elements on the surface of the sample, the information processing device comprising: a placement section that places a result display area within a display screen based on first operation information among the operation information output from the operation section, the data processing results being displayed within the result display area, wherein the first operation information relates to a position and size of the result display area within the display screen designated by the user; a setting section that displays a list of a plurality of data processing methods including at least smoothing and differentiation that can be selected by a user, and sets at least one data processing method designated by a user from among the plurality of data processing methods to the result display area placed within the display screen based on second operation information among the operation information output from the operation section, wherein the second operation information relates to the designation of at least one data processing method to the result display area by the user; and a data processing section that assigns the measurement data to the result display area based on third operation information among the operation information output from the operation section, performs data processing on the measurement data assigned to the result display area using the data processing method set to the result display area, and displays the data processing results within the result display area, wherein the third operation information relates to user-defined assignment of the measurement data to the result display area. a placement section that places a result display area within a display screen based on first operation information among the operation information output from the operation section, the data processing results being displayed within the result display area, wherein the first operation information relates to a position and size of the result display area within the display screen designated by the user; a setting section that displays a list of a plurality of data processing methods including at least smoothing and differentiation that can be selected by a user, and sets at least one data processing method designated by a user from among the plurality of data processing methods to the result display area placed within the display screen based on second operation information among the operation information output from the operation section, wherein the second operation information relates to the designation of at least one data processing method to the result display area by the user; and a data processing section that assigns the measurement data to the result display area based on third operation information among the operation information output from the operation section, performs data processing on the measurement data assigned to the result display area using the data processing method set to the result display area, and displays the data processing results within the result display area, wherein the third operation information relates to user-defined assignment of the measurement data to the result display area.