viii CONTENTS 12.1.3 Making titles 370 l2.1.4 Axis labels.·····.·· 370 12.1.5 Different line styles ....... 370 12.1.6 Point plots,plotting with point symbols 372 12.1.7 Plotting more than one thing at once.. 377 12.1.8 Subplots..·.. 378 12.2 Three dimensional graphics 379 12.2.1Plot3 plots.····· 379 12.2.2 Mesh plots... 379 12.2.3 Axis labelling···· 381 12.2.4 meshc and meshz plots 382 12.2.5 Surface plots using surf. 382 12.2.6 Surface plots using surfc 383 12.2.7 Surface plots using surfl 383 12.2.8 Contour plots using contour 384 12.2.9 Contour plots using contour3 384 12.2.10 Contour plots using pcolor.. 384 12.2.11 Contour plots using contourf.. 385 12.2.12 Contour plots with labels.. 385 13 Miscellaneous topics 387 13.1 Pitfall review 387 13.1.1 Review of for loops.... 387 13.1.2 Review of functions... 390 13.2 The MATLAB way...... 395 l3.3 Selected Applications..·.···· 395 13.3.1 Free fall with air resistance... 395 13.3.2 Diffusion of charged ions in an electric field......... 400 13.3.3 Calculation of Electric fields.... 402viii CONTENTS 12.1.3 Making titles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 12.1.4 Axis labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 12.1.5 Different line styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 12.1.6 Point plots, plotting with point symbols . . . . . . . . . . . . . . . . 372 12.1.7 Plotting more than one thing at once . . . . . . . . . . . . . . . . . . 377 12.1.8 Subplots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378 12.2 Three d imensional graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . 379 12.2.1 Plot3 plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379 12.2.2 Mesh plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379 12.2.3 Axis labelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 12.2.4 meshc and meshz plots . . . . . . . . . . . . . . . . . . . . . . . . . . 382 12.2.5 Surface plots using surf . . . . . . . . . . . . . . . . . . . . . . . . . . 382 12.2.6 Surface plots using surfc . . . . . . . . . . . . . . . . . . . . . . . . . 383 12.2.7 Surface plots using surfl . . . . . . . . . . . . . . . . . . . . . . . . . 383 12.2.8 Contour plots using contour . . . . . . . . . . . . . . . . . . . . . . . 384 12.2.9 Contour plots using contour3 . . . . . . . . . . . . . . . . . . . . . . 384 12.2.10 Contour plots using pcolor . . . . . . . . . . . . . . . . . . . . . . . . 384 12.2.11 Contour plots using contourf . . . . . . . . . . . . . . . . . . . . . . . 385 12.2.12 Contour plots with labels . . . . . . . . . . . . . . . . . . . . . . . . . 385 13 Miscellaneous topics 387 13.1 Pitfall review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387 13.1.1 Review of for loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387 13.1.2 Review of functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390 13.2 The MATLAB way . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 13.3 Selected Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 13.3.1 Free fall with air resistance . . . . . . . . . . . . . . . . . . . . . . . . 395 13.3.2 Diffusion of charged ions in an electric field . . . . . . . . . . . . . . . 400 13.3.3 Calculation of Electric field s . . . . . . . . . . . . . . . . . . . . . . . 402