![can caliper data be plotted on rose diagram can caliper data be plotted on rose diagram](https://help.rockware.com/rockworks17/WebHelp/rose_diagram_exb_sm2.png)
![can caliper data be plotted on rose diagram can caliper data be plotted on rose diagram](https://help.rockware.com/rockworks17/WebHelp/rose_diagram_sm2.png)
longAxis, 'Color', 'white' ) hold off Shape perfered orientation aspectRatio, 'linewidth', 2, 'micronbar', 'off' ) setColorRange () mtexColorbar ( 'title', 'aspect ratio' ) % and on top the long axes hold on quiver ( grains, grains. Lets colorize the grains by their apect ratio and plot on top the long axis directions: % visualize the aspect ratio plot ( grains, grains. For a perfect circle the apect ratio is \(1\) and increases to infinity when the ellipse becomes more and more elongated. A measure for how distinct the ellipse is from a perfect circle is the aspect ratio which is defined as the quotient \(a/b\) between the longest and the shortest axis. These directions are only well defined if the fitted ellipse is not to close to a perfect circle. The direction of the long and the short axis of the fitted ellipse can be obtained by the comands grains.longAxis and grains.shortAxis. Alternatively, one can also scale the ellipse to fit the boundary length by using the option boundary. Note, that the ellipses are scaled such that the area of the ellipse coincides with the actual grain area. The midpoints of the ellipses can be computed by the command grains.centroid. The returned variable omega is the angle describing the rotation of the ellipses and a and b are the length of the longest and shortest half axis. centroid, a, b, omega, 'lineColor', 'w', 'linewidth', 2 ) The basic command for fitting ellipses is fitEllipse = grains. isBoundary ) = grains = smooth ( grains ( 'indexed' ), 10, 'moveTriplePoints' ) % plot the grains plot ( grains, 'micronbar', 'off', 'lineWidth', 2 ) Fit Ellipses grainSize < 10 )) = calcGrains ( ebsd ( 'indexed' ), 'angle', 5 * degree ) grains ( grains. % load sample EBSD data set mtexdata forsterite silent % reconstruct grains and smooth them = calcGrains ( ebsd ( 'indexed' ), 'angle', 5 * degree ) ebsd ( grains ( grains. In order to demonstrate these properties we start by reconstructing the grain structure from a sample EBSD data set. Additionally to the orientation omega, and the lengths a, b of the long axis and short axes that are computed by the command = grains.fitEllipse the following properties based on the fitted ellipses are avaiable. In this section we discuss geometric properties of grains that are related to ellipses fitted to the grains. Parent Beta Phase Reconstruction in Titanium Alloys.Texture evolution in rolled magnesium during uniaxial tension.Plot seismic wave velocities and polarization directions for aggregates.