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UW CSE 190p Section

This document explores foundational concepts in Python plotting using Matplotlib, focusing on creating different types of plots such as line graphs, bar graphs, and scatter plots. It provides essential coding steps for setting colors, markers, and line widths, ensuring clarity in visual presentations. Practical exercises are included, encouraging hands-on application of plotting techniques such as creating scatter plots with random data and customizing figure attributes like titles, labels, and legends. Ideal for students looking to enhance their data visualization skills.

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UW CSE 190p Section

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  1. UW CSE 190p Section 7/26, Summer 2012 Dun-Yu Hsiao

  2. Before We Start • Create and remember save every code and steps you try today! • If you have any question about today’s material, email your report to TA.

  3. Outlines • Visualization: plot

  4. Plot Basics • Line • Color • b : blue • g : green • r : red • c : cyan • m : magenta • y : yellow • k : black • w : white • Width • Marker

  5. Plot Setting plt.plot(t, f(t), color=’r', linewidth=2.0) plt.setp(lines, color='r', linewidth=2.0) plt.setp(lines, 'color', 'r', 'linewidth', 2.0)

  6. Plot Basic Exercise • Plot (x-2)2-10, -10< x < 10, line color red, dashed line, line width 3.0 • Plot again using green triangular markers, step the marker by 1.5

  7. Plot Basics • Line graph • Bar graph • Scatter plot

  8. Figure Attribute • Axis • Grid • Label • Title • Figure • Multiple figures • Multiple plots in the same graph • Multiple graphs in the same figure, i.e., subplots

  9. Exercise • Scatter plot of random 100 points between x:[0,1] and y:[5,7] • Make the axis betweenx:[-0.5,1.5] and y:[4.5,7.5] • Add dotted grid, step by 0.5 • Add title as “Random Scatter”

  10. Legends, Labels, Decorations • Legend • Text • Annotation

  11. Exercise x = [1, 2, 3, 4, 5, 6] y1 = [1675, 2979, 4356, 3432, 6851, 5245] y2 = [3163, 4198, 7021, 2134, 2338, 4598] • Create figure, plot in two separate plots • Create a new figure, plot both in one • Add max annotations of y1 and y2 • Add legend, xlabel “Year”, ylabel ”Earning”

  12. Questions?

  13. Homework/Quiz Questions?

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