Vasily Ilin

Is this being worked on? Do we know why it's failing?

Hi. This is currently being built. Check out https://vilin97.github.io/posts/post4/ where I describe how to set up a spatial jump problem. Or check out any of the spatial tests in `DiffEqJump`.

> I was curious whether we can define some say vector field(velocity) over the cartesian grid, and check out it's influence on the Jump process (where, say the rate laws...

`CartesianGridRej` is almost 2x faster than `CartesianGridIter`. 

@isaacsas, should this be closed now, given #183 and #189?

> Which loop? Every SSA has a loop that updates rates of dependent reactions. For example, here it is for DirectCR: https://github.com/SciML/DiffEqJump.jl/blob/master/src/aggregators/directcr.jl#L130.

Another optimization: When all jumps are saved, can save jumps instead of the state, and reconstruct any given state from the sequence of jumps. This would improve memory usage on...

Instead of checking if `sum_rate` is zero we can check that the current state vector is the zero vector. This is, of course, linear in the number of species, but...

Same thing for `report_package`: ``` julia> report_package("DiffEqJump") [toplevel-info] virtualized the context of Main (took 0.002 sec) [toplevel-info] entered into C:\Users\Vasily\.julia\dev\DiffEqJump\src\DiffEqJump.jl [toplevel-info] entered into C:\Users\Vasily\.julia\dev\DiffEqJump\src\jumps.jl [toplevel-info] entered into C:\Users\Vasily\.julia\dev\DiffEqJump\src\massaction_rates.jl [toplevel-info] entered...

Say, you want a reaction that consumes species `s` in site `i` (assuming the species are in the `[A,B,C]` order, `s=2` would be species `B`). You would construct the stoichiometry...