Learn how to troubleshoot and resolve the frustrating "Invalid Dimension Error" on your TI-84 Plus calculator.. Why does my graphing screen keep saying "error: invalid dimension"? I drew a circle one time, after that my graphing screen doesn't work anymore. I rely on the graphing screen a lot to check my work so if it doesn't work it's a problem for me.
If you are trying to graph on your TI83/84 and you get the INVALID DIM error, then this usually means your PLOT is turned on. Follow the steps below to turn off your PLOT and see if the problem is fixed.. This video describes how to resolve the ERR: INVALID DIM error message on a TI-83 (or TI-84) graphing calculator.