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标题: 直角坐标与极坐标的转换---例题 [打印本页]
作者: 森之张卫东    时间: 2015-9-16 22:36
标题: 直角坐标与极坐标的转换---例题
  1. <div>function [r, theta] = rect2polar(x, y)</div><div>%RECT2POLAR Convert rectangular to polar coordinates</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>Function RECT2POLAR accept the rectangular coordinates</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>(x, y) and converts them into the polar coordinates</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>(r, theta), where theta is expressed in degrees.</div><div>%</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>Calling sequence:</div><div>%<span class="Apple-tab-span" style="white-space:pre">                </span>[r, theta] = rect2polar(x, y)</div><div>%</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>Define variables:</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>r<span class="Apple-tab-span" style="white-space:pre">                        </span>--Length of polar vector</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>theta<span class="Apple-tab-span" style="white-space:pre">                        </span>--Angle of vector in degrees</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>x<span class="Apple-tab-span" style="white-space:pre">                        </span>--x-position of point</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>y<span class="Apple-tab-span" style="white-space:pre">                        </span>--y-position of point</div><div>%</div><div>%<span class="Apple-tab-span" style="white-space:pre">        </span>Record of revisions:</div><div>%<span class="Apple-tab-span" style="white-space:pre">                </span>Date<span class="Apple-tab-span" style="white-space:pre">                </span>Programmer<span class="Apple-tab-span" style="white-space:pre">                </span>Descriptoin of change</div><div>%<span class="Apple-tab-span" style="white-space:pre">                </span>====<span class="Apple-tab-span" style="white-space:pre">                </span>=========<span class="Apple-tab-span" style="white-space:pre">                </span>===============</div><div>%<span class="Apple-tab-span" style="white-space:pre">                </span>09/19/00<span class="Apple-tab-span" style="white-space:pre">        </span>S.J.Chapman<span class="Apple-tab-span" style="white-space:pre">                </span>Original code</div><div>
  2. </div><div>r = sqrt( x .^2 + y .^2);</div><div>theta = 180/pi * atan2(y, x);</div><div></div>
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详细内容
作者: 森之张卫东    时间: 2015-9-16 22:37
  1. function [r, theta] = rect2polar(x, y)
  2. %RECT2POLAR Convert rectangular to polar coordinates
  3. %        Function RECT2POLAR accept the rectangular coordinates
  4. %        (x, y) and converts them into the polar coordinates
  5. %        (r, theta), where theta is expressed in degrees.
  6. %
  7. %        Calling sequence:
  8. %                [r, theta] = rect2polar(x, y)
  9. %
  10. %        Define variables:
  11. %        r                        --Length of polar vector
  12. %        theta                        --Angle of vector in degrees
  13. %        x                        --x-position of point
  14. %        y                        --y-position of point
  15. %
  16. %        Record of revisions:
  17. %                Date                Programmer                Descriptoin of change
  18. %                ====                =========                ===============
  19. %                09/19/00        S.J.Chapman                Original code

  21. r = sqrt( x .^2 + y .^2);
  22. theta = 180/pi * atan2(y, x);
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作者: 司马追    时间: 2015-9-17 09:11
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