Arrays 如何在Matlab中绘制单元阵列

我在Matlab中建模SIR疾病传播模型，我有一个网格，它是一个细胞阵列，每个细胞表示一个状态（s，I，r）

我想用

s

作为蓝点和

I

作为红点绘制网格，轴采用

长度（网格）

---

您可以使用

ismember

查找每个标签在单元格数组中的位置。第二个输出将提供标签的索引。然后，您可以使用带有自定义颜色映射的

imagesc

来显示结果

% Create a copy of Grid where the empty cells are replaced with ''
tmp = Grid;
tmp = cellfun(@(x)['' x], Grid, 'UniformOutput', false);

% Locate all of the 's' and 'i' cells and assign values of 1 and 2 respectively
[~, labels] = ismember(tmp, {'s', 'i'});

% Display the resulting label matrix
imagesc(labels)

% Use a custom colormap where empty cells are black, 's' are blue and 'i' are red
cmap = [0 0 0; 0 0 1; 1 0 0];
colormap(cmap)

如果我们用

Grid={'s'，[]；'i'，[]}

如果你想要实际的点，你可以这样做：

colors = {'r', 'b'};
labels = {'s', 'i'};

for k = 1:numel(labels)
    % Find the row/column indices of the matches
    [r, c] = find(cellfun(@(x)isequal(x, labels{k}), Grid));

    % Plot these at points using the specified color        
    plot(c, r, '.', 'Color', colors{k}, 'MarkerSize', 20);
    hold on
end

---

您可以使用

ismember

查找每个标签在单元格数组中的位置。第二个输出将提供标签的索引。然后，您可以使用带有自定义颜色映射的

imagesc

来显示结果

% Create a copy of Grid where the empty cells are replaced with ''
tmp = Grid;
tmp = cellfun(@(x)['' x], Grid, 'UniformOutput', false);

% Locate all of the 's' and 'i' cells and assign values of 1 and 2 respectively
[~, labels] = ismember(tmp, {'s', 'i'});

% Display the resulting label matrix
imagesc(labels)

% Use a custom colormap where empty cells are black, 's' are blue and 'i' are red
cmap = [0 0 0; 0 0 1; 1 0 0];
colormap(cmap)

如果我们用

Grid={'s'，[]；'i'，[]}

如果你想要实际的点，你可以这样做：

colors = {'r', 'b'};
labels = {'s', 'i'};

for k = 1:numel(labels)
    % Find the row/column indices of the matches
    [r, c] = find(cellfun(@(x)isequal(x, labels{k}), Grid));

    % Plot these at points using the specified color        
    plot(c, r, '.', 'Color', colors{k}, 'MarkerSize', 20);
    hold on
end