the picture a map on a rigid lattice is drawn as: the rectangle its cells span and, for every pixel, the measurement whose cell covers it or -1 where none does, as an array of shape (ny, nx) with the first row at the bottom; None where the map is no picture

Syntax

xs, ys, index = mapRaster(ebsd)

One pixel per cell.

xs, ys, index = mapRaster(ebsd, maxPixels=10000)

A coarser picture.

xs, ys, index = mapRaster(ebsd, layout=mapLayout('x↑→y'))

Turned to another convention.

Description

Every pixel of the picture shows the measurement whose site is nearest. Where the lattice is aligned with the screen the picture has one pixel per cell; elsewhere, as on a turned or a hexagonal lattice, a quarter of the spacing.

A map whose positions have drifted from their lattice has no picture: the drift is judged at the scale of the picture, with a hundredth of a cell as the floor. The padding of a grid shows nothing.

Input

ebsd EBSD

Keywords

keyword default description
maxPixels 16000000 the largest number of pixels; a larger picture is scaled down, its shape kept
layout None the 2 x 2 matrix taking the plane to the screen, mapLayout; by default the identity

Output

xs, ys the screen extent (lo, hi) of the picture in x and in y
index array of shape (ny, nx), the measurement of every pixel, -1 for none

See also

mapCells, mapPoints, mapLayout, plotEBSD

source

Citing this page. This page is part of the documentation of MTEX, a free and open source MATLAB toolbox for analyzing and modeling crystallographic textures. It was written by The MTEX Developers and is published at https://mtex-toolbox.github.io/mapRaster_py.html. If you use MTEX, or reuse text or figures from this page, in your research, please cite

F. Bachmann, R. Hielscher, H. Schaeben: Texture Analysis with MTEX - Free and Open Source Software Toolbox, Solid State Phenomena 160 (2010), 63-68. 10.4028/www.scientific.net/SSP.160.63

BibTeX 
@article{bachmann2010mtex,
  author  = {F. Bachmann and R. Hielscher and H. Schaeben},
  title   = {Texture Analysis with MTEX - Free and Open Source Software Toolbox},
  journal = {Solid State Phenomena},
  volume  = {160},
  pages   = {63-68},
  year    = {2010},
  doi     = {10.4028/www.scientific.net/SSP.160.63},
  url     = {https://doi.org/10.4028/www.scientific.net/SSP.160.63}
}

Other papers describing specific MTEX methods are listed under Publications — please cite the one that best fits your application. The MTEX source code is licensed under the GNU General Public License v2.0; the text and figures of this documentation are licensed under CC BY 4.0, which permits reuse — including by automated systems — provided The MTEX Developers and this page are credited.