# tourr v0.5.6

0

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## Implement Tour Methods in R Code

Implements geodesic interpolation and basis
generation functions that allow you to create new tour
methods from R.

## Readme

## Functions in tourr

Name | Description | |

dependence_tour | A dependence tour path. | |

cmass | Central mass index. | |

center | Center a numeric vector by subtracting off its mean. | |

display_pcp | Parallel coordinates tour path animation. | |

blank_plot | Set up a blank plot to display data projections | |

Laser measurements | Turnable laser measurements from Bellcore | |

lda_pp | LDA projection pursuit index. | |

find_platform | Find the platform Find the platform being used by the user | |

find_path_peak | Find the most interesting projection along a geodesic. | |

display_scatmat | Scatterplot matrix tour path animation. | |

basis_nearby | Generate nearby bases, e.g. for simulated annealing. | |

Rat CNS | Rat CNS Gene Expression | |

little_tour | A little tour path. | |

guided_tour | A guided tour path. | |

display_trails | Display tour path with trails | |

display_xy | Display tour path with a scatterplot | |

frozen_tour | A frozen tour path. | |

basis_random | Generate a random basis | |

display_faces | Chernoff faces tour path animation. | |

display_dist | 1d distribution tour path animation. | |

holes | Holes index. | |

display_density2d | Display tour path with a density and scatterplot | |

bases_little | Generate bases for the little tour | |

frozen_guided_tour | The frozen guided tour | |

basis_init | Generate initial basis. | |

freeze | Freeze and thaw matrices | |

display_depth | Display 3d projection with depth cues | |

display_groupxy | Display 2D tour projections displayed separately by groups | |

display_andrews | Andrews' curves tour path animation. | |

display_stars | Star glyph tour path animation. | |

display_image | Image tour path animation. | |

new_tour | Create a new tour. | |

path_index | Compute index values for a tour history. | |

geodesic_info | Calculate information required to interpolate along a geodesic path between two frames. | |

draw_tour_axes | Draw tour axes with base graphics | |

path_dist | Compute distance matrix from bases. | |

path_curves | Draw the path that the geodesics took. | |

grand_tour | A grand tour path. | |

geodesic_path | Generate geodesic path. | |

find_best_dir | Find the most promising direction to travel in. | |

plot.path_curve | Plot history curves. | |

display_stereo | Anaglpyh tour path animation. | |

normalise | Normalise a numeric matrix. | |

local_tour | A local tour path. | |

plot.path_index | Plot history index with ggplot2. | |

find_best_frozen_dir | Find most promising direction in frozen space. | |

paths_index | Compute index value for many histories. | |

find_frozen_path_peak | Find most highest peak along frozen geodesic. | |

render | Render frames of animation to disk | |

interpolate | Interpolate geodesically between bases. | |

proj_dist | Calculate the distance between two bases. | |

project3d | Stereographic projection | |

is_orthonormal | Test if a numeric matrix is orthonormal. | |

orthonormalise_by | Orthonnormalise one matrix by another. | |

orthonormalise | Orthonormalise using modified Gram-Schmidt process. | |

search_better_random | Search for better projection, with stochastic component. | |

step_angle | Step along an interpolated path by angle in radians. | |

search_frozen_geodesic | Search for most interesting projection along frozen geodesics. | |

new_geodesic_path | Generate a geodesic path between bases supplied by generator | |

save_history | Save tour history. | |

step_fraction | Step along an interpolated path by fraction of path length. | |

pda_pp | PDA projection pursuit index. | |

rescale | Rescale a matrix or data frame | |

search_better | Search for a better projection near the current projection. | |

to_stop | Prints information on how to stop the output | |

xnul | A null function | |

planned_tour | A planned tour path. | |

search_geodesic | Search for most interesting projection along random geodesics. | |

sphere_data | Sphere a matrix (or data frame) by transforming variables to principal components. | |

Olive oil measurements | Olive oil samples from Italy | |

Ozone measurements | Monthly ozone measurements over Central America | |

Tropical Atmosphere Ocean | Tropical Atmosphere Ocean data | |

anaglyph | Draw anaglyphs with base graphics. | |

Places Ratings | Ratings of different locations across North America | |

andrews | Compute Andrews' curves | |

check_freezer_safe | Check matrix is a valid frozen matrix | |

animate | Animate a tour path. | |

Flea measurements | Flea beatle measurements | |

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## Last month downloads

## Details

License | MIT + file LICENSE |

LazyData | true |

URL | https://github.com/ggobi/tourr |

BugReports | https://github.com/ggobi/tourr/issues |

RoxygenNote | 6.1.1 |

Encoding | UTF-8 |

NeedsCompilation | no |

Packaged | 2019-02-08 23:44:56 UTC; cookd |

Repository | CRAN |

Date/Publication | 2019-02-12 00:10:03 UTC |

suggests | ash , colorspace , ggplot2 , reshape2 , TeachingDemos , testthat |

imports | MASS |

depends | R (>= 3.5) |

Contributors | Hadley Wickham, Nick Spyrison, Ursula Laa |

#### Include our badge in your README

```
[![Rdoc](http://www.rdocumentation.org/badges/version/tourr)](http://www.rdocumentation.org/packages/tourr)
```