Device for analysing variable magnitudes by simultaneous multiple windowing

A non-transitory computer readable medium embodying program instructions for execution by a data processing apparatus, the program instructions adapting the data processing apparatus for analysing data files representative of values assumed by quantities that vary over time, said program instructions comprising:

• managing a plurality of display windows via a display window management tool, each display window for displaying a representation of a selected quantity and, being associated with a first quantity selecting tool and a second time reference selecting tool, coupled to said management tool, each display window further comprising a third linking tool arranged so as to enable a user who has selected a number of quantities and associated time references, to select at least two of the plurality of display windows associated with the selected quantities, and link together the first tools and the second tools of the selected display windows, so that the selection of a particular quantity by the user using a master linked first tool selected from the linked first tools and associated with a master display window chosen from the selected display windows results in an automatic selection of the particular quantity by said management tool on each slave display window chosen from the selected display windows, for displaying a representation of the particular quantity in all the selected display windows without affecting the representation of the quantity displayed in one or more of the plurality of windows not selected by the user, and a selection of a particular time reference by the user using a master linked second tool selected from the linked second tools and associated with the master display window results in an automatic selection of the particular time reference by said management tool on each slave display window for using the particular time reference in all the selected display windows without affecting the time reference used in one or more of the plurality of windows not selected by the user.