Color fixes and improvements

Version 0.2.1

• Fix a bug in colorbar drawing that lead to wrong colors (see #6)
• Change defaults in functions for drawing a separate colorbar and combining it with arranged images
• Support combining both horizontal and vertical cbars with a brainview image
• Suggest viridis and RColorBrewer packages for great colors, use them if available

Beautiful colorbars and way more documentation!

Version 0.2.0

• Breaking: move rotate3D and flid3D function to freesurferformats. To update your code, replace fsbrain::rotate3D with freesurferformats::rotate3D.
• Support export of coloredmeshes to PLY format
• Add new vignette, a Frequently Askes Questions (FAQ) format
• Add R notebook with code and live examples (web)
• Improve documentation in docstrings
• Improve colormap computation and handling, especially drawing of colorbars
• Remove plyr dependendency, require freesurferformats 0.1.10
• The 'colormap' argument to all vis functions is deprecated, use makecmap_options instead. See the vis function docs for an example.

Volume visualisation, backgrounds, and much more

This release is by far the largest update to fsbrain so far. New features include:

• volume visualization (voxel-based, surface-generation from voxels, lightbox view, ...)
• major restructuring of the rendering code to make changes easier, based on color layers for meshes
• support for using backgrounds (e.g., mean curvature) when plotting surface data (yes, it's a color layer), see #6
• improved colorbar plotting: colorbars now go into a separate grid cell of the images
• support cortex_only parameter with more functions, fix #2
• major improvements to test infrastructure
• add new vignette for volume visualization, extend the surface vignette

and more.

Restrict data to cortex & lots of new visualizations

Version 0.0.3

• Add function to visualize arbitrary vertices and label data (vis.labeldata.on.subject) and a function to compute the neighbors of a vertex (mesh.vertex.neighbors)
• The vis.data.on.subject function now accepts a character string for the lh_morphdata and rh_morphdata arguments. If a string, it is treated as a filepath and the data is loaded from that file.
• Add the logical parameter 'cortex_only' to various native space morphometry functions (including subject.morph.native, group.morph.native, group.morph.agg.native na group.multimorph.agg.native). When set to TRUE, this parameter will limit the data to vertices which are part of the cortex (as defined by the label file label//h.cortex.label for the respective subject). This allows one to ignore the data from the medial wall in all of these functions.
• Also add 'cortex_only' parameter for the equivalent standard space functions and the morphometry visualization functions.
• Add more examples to various functions, extend the vignette with latest changes and new functionality.
• Remove unused dependencies
• Add function vislayout.from.coloredmeshes which allows one to create a tight layout visualization from arbitrary angle sets

Labels, masks, fixes meshes and way better vignette

Changes for Version 0.0.2:

• Support rglactions and rgloptions to conveniently increase output resolution and create screenshots
• Scale colormaps over several meshes where appropriate. This ensures that the same color in the left and right hemisphere represents the exact same data value.
• Improve doc strings of many functions
• Add helper function to clip data at percentile (clip.data)
• Require freesurferformats version >= 0.1.4 for surface loading fix, adapt mesh visualization to fix
• Introduce masks
• Add functions to visualize labels (vis.subject.label) and masks (vis.mask.on.subject)
• Tons of work on the vignette

Initial CRAN release

Code for version 0.0.1 available on CRAN.