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Given an arbitrary (directed or undirected) graph where each node has a name, create force-directed visualization of the graph.

X3D is the successor to VRML

Given a tree where each node has a weight and a name, create a treemap visualization. There should be ways to select different layout algorithms as well as other options such as cushioned treemaps.

A property change animator is required.

This would probably be most useful in direct graphics.

Useful resources:

• [http://www.ncl.ucar.edu/Applications/meteo.shtml NCL meteograms]

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The TEXTURE input should be checked in the error handling.

For more details about beanplots, see [http://www.jstatsoft.org/v28/c01/paper Beanplot paper].

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This uses many instances of the VISgrArrow class to represent a grid of arrows. This should have an option to jitter the grid.

This should probably be implemented in direct graphics.

Useful resources:

• [http://www.ncl.ucar.edu/Applications/rose.shtml NCL wind rose]

LIT is described in: R.M. Kirby, H. Marmanis, D.H. Laidlaw, Visualizing Multi-valued Data from 2D Incompressible Flows Using Concepts from Painting, Proc. Visualization 99, 1999.

There is a problem when running all the OpenCL unit tests which is not present when each test is run individually.

OSTR (image-guided streamline placement) is described in: G. Turk and D. Banks, Image-Guided Streamline Placement, Proc. SIGGRAPH 96, pp. 453-460, 1996.

Each predictor should have either a predict_proba() or decision_function() method.

The predict_proba method of a classifier outputs the probability of the instance being in each of the classes.

The decision_function method finds the distance to the separating hyperplane. For example, an SVM classifier finds hyperplanes separating the space into areas associated with classification outcomes. This function, given a point, finds the distance to the separators.

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VIS_LIC should handle float or double inputs

Still need to implement:

• sparklines
• bar charts
• radar charts
• maps
• Google-o-meters
• QR codes
• all attributes

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Currently, spaces are allowed in section names, but not key names.

This should be changeable by the caller instead of fixed.

See the [http://pyinsci.blogspot.com/2009/09/violin-plot-with-matplotlib.html violin plot reference] for more details on violin plots.

The NCL color tables are available [http://www.ncl.ucar.edu/Document/Graphics/color_table_gallery.shtml here].

A more comprehensive implementation of parallel sets than MG_COMPARISON is needed.

A good example to consider would be: http://eagereyes.org/parallel-sets

Classes for tetrahedrons, octahedrons, dodecahedrons, and icosahedrons would be occasionally useful.

Like the Bayesian blocks implementation from AstroML.

Hi Mike. Would you consider running the small perl script idlwave_catalog and including these among your distributed file set? Many of the others do this (e.g. coyote lib, astrolib, etc.).

See https://github.com/jdtsmith/idlwave/blob/master/idlwave_catalog

Gives IDLWAVE pre-scanned to all your code info, e.g.:

Usage: Result = mg_struct_equal(s1, s2)
Keywords: NO_TYPECONV
Source: MGLIB [L---] ~/code/idl/mglib/src/introspection/mg_struct_equal.pro

Use media and interior statements: http://www.povray.org/documentation/view/3.6.1/418/

It would be nice to be able to create animated PNGs with the vis library.

I have some problem with the multi-processing module. Here is the test I want to run.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
function square, x
return, x^2
end

x1 = findgen(8)
; pool = mg_pool(n_processes=4)
pool = obj_new('MG_Pool', n_processes=4)
y1 = pool->map('square', x1)
print, y1
end
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

The error message is
MG_MAP::NEXT: error completing pool command: Variable is undefined: SQAURE.

If I replace 'square' in the map method with other intrinsic functions like 'sin' or 'beselj', it works well. Could you give me some hint about the problem? Thanks.

This class would represent a single arrow. This would be used in VISgrArrowGrid class to represent a grid of arrows.

This would probably be most useful in direct graphics.

Some good resources for Taylor plots:

• http://www.ncl.ucar.edu/Applications/taylor.shtml
• http://www-pcmdi.llnl.gov/about/staff/Taylor/CV/Taylor_diagram_primer.pdf

VIS_LIC would output a volume and take u, v, w input arguments.

Object graphics could be displayed in modern web browsers.

You should not have to escape dots in group names of an HDF 5 file variable specification since it can not be an attribute.

The fisheye lens would be given a location and radius in view coordinates and would place a partially transparent image above the current view. It would be transparent in most of the image, but magnify inside the location-radius.

[graph-tool](http://projects.skewed.de/graph-tool/ graph-tool) is written in C++ and already has Python bindings.

There should be a property to set whether a red-blue anaglyph or a red-cyan anaglyph is to be created.