A bit too few information; What is "The" LCD? Your own? The character LCD coming with a development kit?? Which Kit???
You would use, preferably, a graphic LCD, take a look at this -
And use a magnetometer sensor, something like this -
As far as kits are concerned -
Here is a nokia graphic LCD shield for PSOC 4 board -
I have CY3210.
LCD is mounted in Mini prog kit.
Also can you explain, how can i move picture on LCD by using potentiometer?
In PSOC Designer, if you 'launch example browser" link,
bottom of design catalog window, there are several
examples using ADC projects you can look at.
PSOC designer LCD module also has a bar graph mode,
and you could modify code to do a bar graph where its
width is proportional to Gauss.
If you go here a number of videos on traing for PSOC Designer, the tool
you use to create designs and program the code for PSOC 1.