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[stschiff]

Hi,

is it possible to make categorical axes in DataTank, with custom string values as tick marks, similar to DataGraph? What I have in mind is data in the form of a matrix, with rows and columns denoted by names. I would like to be able to plot a colormesh with strings as the axes tick labels instead of numbers… this would be useful to plot a heat map indicating e.g. correlations between items with names rather than ordered numbers.

I guess the easiest way to achieve that is to allow the axes drawing command to take a list of strings as input.

Stephan

[David]

Can you e-mail me an example? Just to give me a better idea.

What I will likely do is to make it easy to send data from DataTank to DataGraph. That way I don't have to move everything over. DataGraph has a lot more control over the look of the graph, and moving all of that over would be a lot of work. DataTank is pretty good at driving other programs, and DataGraph has streaming support already (dgraphconnect uses that)

DataGraph right now has a pretty primitive scalar field (2D Mesh) support, but a lot of that has to do with the fact that I haven't figured out how to input the objects. I currently have a way to input uniformly spaced meshes, but DataTank has unstructured, logically rectangular and uniform.

David

[Adam Maxwell]

For what it's worth, I could use this for 1-D and 2-D plots, especially to be able to add date/time strings on an axis. For ocean models, we have a date as some time since a reference date, but a time axis of e.g. 0-50,000 minutes is just confusing to people.

I expect the margins would be tricky to get right, though, and there'd have to be some way of mapping strings to discrete axis values and sparsifying them appropriately.