A method for graphical visualization of a measured magnetic field on an imaging volume of a MRI magnet includes providing data values measured at selected points of the measured magnetic field, converting each of the data values to a visualizable value based on where the data value lies within a predetermined range of data values and thus within a range of visualizable values corresponding to the range of data values, and plotting each visualizable value corresponding to each data value at a position on a grid corresponding to the position of the selected point of the measured magnetic field such that the visualizable values once plotted on the grid provide a graphical visualization of the condition of the measured magnetic field.