Updated 06 Oct 2016
The purpose of this package is to plot evenly spaced streamlines for a 2D vector field with more flexible style options than the standard function streamslice(). Specifically, this package includes:
+ "Fancy" arrow, taper, and texture styles as described Jobar & Lefer, 1997 
+ Explicit control over both minimum and maximum streamline spacing
+ Better selection of streamline step size for high line densities
See https://keithfma.github.io/evenly_spaced_streamlines/ for examples.
 Jobard, B., & Lefer, W. (1997). Creating Evenly-Spaced Streamlines of Arbitrary Density. In W. Lefer & M. Grave (Eds.), Visualization in Scientific Computing ?97: Proceedings of the Eurographics Workshop in Boulogne-sur-Mer France, April 28--30, 1997 (pp. 43?55). inbook, Vienna: Springer Vienna. http://doi.org/10.1007/978-3-7091-6876-9_5
Keith Ma (2020). Evenly Spaced Streamlines (https://github.com/keithfma/evenly_spaced_streamlines), GitHub. Retrieved .
When using even_stream_arrow I get the following error
"Warning: Error updating Patch.
Enforcing Delaunay constraints leads to unstable repeated constraint intersections.
This may be due to near coincident intersecting constraints or near duplicate
Ideas on how to fix it? Does this mean that I should not trust the streamlines?
Amazing work. Thanks!!
For the interested, there is an alternative MATLAB implementation of the Jobard & Lefer 1997 algorithm for evenly-spaced streamlines at: https://www.mathworks.com/matlabcentral/fileexchange/54758-estream2
Thanks David! Your comment made me take a harder look at the standard streamslice() function, and it turns out I was able to make use of parts of it to speed up this package considerably. I also updated the documentation to better address the differences (advantages, I hope) of this package compared with streamslice().
This looks pretty good - I may use it in the future. Is it worth also showing the "default" Matlab streamlines in your examples, to show why this method is better?
Improved speed, simplified usage, and updated documentation.
Added link to project gh-pages site
Updated submission title
Inspired by: arrow