<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt"><div class="" style="">Hi,</div><div class="" style=""><br class="" style=""></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;" class="">I have previously used the function plot and it worked well. But, every time i used it now it outputs the error 21. </div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;" class=""><br class="" style=""></div><div style="background-color: transparent;" class="">-->x = [-5:5]</div><div style="background-color: transparent;" class=""> x =</div><div
style="background-color: transparent;" class=""> </div><div style="background-color: transparent;" class=""> - 5. - 4. - 3. - 2. - 1. 0. 1. 2. 3. 4. 5. </div><div style="background-color: transparent;" class=""> </div><div style="background-color: transparent;" class="">-->plot(x)</div><div style="background-color: transparent;" class=""> !--error 21 </div><div style="background-color: transparent;" class="">Invalid index.</div><div style="background-color: transparent;" class="">at line 14 of function %h_e called by : </div><div style="background-color: transparent;" class="">at line 15 of function _update_shaded_plots called by : </div><div style="background-color: transparent;" class="">at line 91 of function _compute_data_bounds called by :
</div><div style="background-color: transparent;" class="">at line 327 of function _mainPlot called by : </div><div style="background-color: transparent;" class="">at line 28 of function plot called by : </div><div style="background-color: transparent;" class="">plot(x)</div><div style="background-color: transparent;" class=""> </div><div style="background-color: transparent;" class=""><br></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;" class="">I am a windows 7 user. Please help me fix this.</div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;" class="">Thanks a lot,</div><div style="color: rgb(0, 0,
0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;" class=""><br></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;" class="">Tom</div></div></body></html>