MATLAB: How to draw a filled semi circle?(like the one in the image) Thanks,

circle

Best Answer

This works:

r = 1;
semicrc = r.*[cos(0:0.1:pi); sin(0:0.1:pi)];
figure(1)
area(semicrc(1,:), semicrc(2,:), 'FaceColor','b')
axis equal

Related Solutions

MATLAB: How to modify the code below to build a hexagon knowing the coordinates of the hexagon roofs

Try this:

function xy = polygon(sides)
radians=(2*pi)./sides;
r=ones(1,sides+1);
theta=0:radians:2*pi;
xy = [r(:).*cos(theta(:))  r(:).*sin(theta(:))];
end

then:

sides=6;
XY = polygon(sides)                                 % Call ‘polygon’ Function
figure
plot(XY(:,1),  XY(:,2))
axis([-1.1  1.1    -1.1  1.1])
axis equal

For best results, save the function to its own file as: polygon.m

MATLAB: (Download image)

projectdir = fullfile(pwd, 'saved_images');         %location to store the files
if ~exist(projectdir, 'dir')
   mkdir(projectdir);
end
fid = fopen('TheFile.txt', 'rt');
imcount = 0;
while true
  this_url = fgetl(fid);
  if ~ischar(this_url)
    break;        %end of file
  end
  if isempty(strtrim(this_url))
    continue      %empty line, probably near end of file
  end
  [url_path, url_img, url_ext] = fileparts(this_url);
  dest_file = fullfile(projectdir, [url_img url_ext]);
  if exist(dest_file, 'file')
    fprintf('skipping existing %s\n', dest_file);
    imcount = imcount + 1;
    urls{imcount} = this_url;
    img_files{imcount} = dest_file;
    %img_content{imcount} = imread(dest_file);

    continue;
  end
  fprintf('loading ... %s\n', url_img);
  try
    urlwrite(this_url, dest_file);
    imcount = imcount + 1;
    urls{imcount} = this_url;
    img_files{imcount} = dest_file;
    %img_content{imcount} = imread(dest_file);
  catch
    fprintf('failed downloading %s from "%s"\n', url_img, this_url);
  end
end

Best Answer

Related Solutions

MATLAB: How to modify the code below to build a hexagon knowing the coordinates of the hexagon roofs

MATLAB: (Download image)

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