55 lines
1.5 KiB
Matlab
55 lines
1.5 KiB
Matlab
function plot2DTrajectory(values, linespec, marginals)
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%PLOT2DTRAJECTORY Plots the Pose2's in a values, with optional covariances
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% Finds all the Pose2 objects in the given Values object and plots them
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% in increasing key order, connecting consecutive poses with a line. If
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% a Marginals object is given, this function will also plot marginal
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% covariance ellipses for each pose.
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import gtsam.*
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if ~exist('linespec', 'var') || isempty(linespec)
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linespec = 'k*-';
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end
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haveMarginals = exist('marginals', 'var');
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keys = KeyVector(values.keys);
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holdstate = ishold;
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hold on
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% Plot poses and covariance matrices
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lastIndex = [];
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for i = 0:keys.size-1
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key = keys.at(i);
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x = values.at(key);
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if isa(x, 'gtsam.Pose2')
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if ~isempty(lastIndex)
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% Draw line from last pose then covariance ellipse on top of
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% last pose.
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lastKey = keys.at(lastIndex);
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lastPose = values.at(lastKey);
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plot([ x.x; lastPose.x ], [ x.y; lastPose.y ], linespec);
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if haveMarginals
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P = marginals.marginalCovariance(lastKey);
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gtsam.plotPose2(lastPose, 'g', P);
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end
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end
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lastIndex = i;
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end
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end
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% Draw final covariance ellipse
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if ~isempty(lastIndex) && haveMarginals
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lastKey = keys.at(lastIndex);
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lastPose = values.at(lastKey);
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P = marginals.marginalCovariance(lastKey);
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gtsam.plotPose2(lastPose, 'g', P);
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end
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if ~holdstate
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hold off
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end
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end
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