MATLAB: Bars showing the measurement periods for oceanography data

bar plotshowing measurements periods of data

Hi Does anyone have code for plotting bar to show measurements periods as the same as pictures which I attached? Thank you in advance.

Best Answer

I do not know what your data are.

This works:

XData = sort(randi(9, 10, 2),2);                                % Create Data

YData = bsxfun(@times,ones(size(XData)),(1:size(XData,1))');    % Create Data
figure(1)
plot(XData', YData', 'LineWidth',2)                             % Note Transposed Matrices
axis([0  10    0  size(XData,1)+1])

Experiment with my code and your data to get the results you want.

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MATLAB: Timer with varying periods

I don't know of this being possible, but it is certainly a good idea for an enhancement request.

Here is how I would tackle this:

Have the timer only execute once, i.e. 'TasksToExecute' = 1.
In the 'TimerFcn' have it start a new timer with a StartDelay equivalent to your new period.
Finally at the end of the 'TimerFcn', have it delete the timer calling it so you don't end up with hundreds of timers

MATLAB: Plotting negative values with blue and positive values with red

You can use bar(). Try this:

% Create sample data.
numPoints = 63;
xValues = 1 : numPoints;
yValues = rand(1, numPoints) - 0.5;
% Find where data is positive or negative.
positiveIndexes = yValues >= 0;
negativeIndexes = yValues <  0;
% Plot column plot (bar chart).
bar(xValues(positiveIndexes), yValues(positiveIndexes), 'r', 'BarWidth', 1)
hold on
bar(xValues(negativeIndexes), yValues(negativeIndexes), 'b', 'BarWidth', 1)

Best Answer

Related Solutions

MATLAB: Timer with varying periods

MATLAB: Plotting negative values with blue and positive values with red

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