Returning index

[Alexander Flyax]

One feature I liked a lot about Matlab is that it was possible to do stuff like:

[data_peaks_y(i) data_peaks_x(i)] = min(data_sweeps{i}(stim_start:peak_end));

or function like find(), which, if I am not mistaken, returned the indexes of satisfied condition.

Is there a quick way to implement this in Julia, if this feature doesn't already exist? I want to find, for example

array .< val

and have not only a list of true/false values returned, but also the indexes where the condition is true.

[Chiyuan Zhang]

For min / max, you could use the indmin, indmax functions. For (array .< val), julia also have a find function that does the same thing as matlab.

[Alexander Flyax]

Thanks, that works well!

Although, weirdly, `min( )` doesn't work:

julia> a = rand(5)
5-element Array{Float64,1}:
 0.988209
 0.568828
 0.82837
 0.047106
 0.156485

julia> indmin(a)
4

julia> findmin(x)
(0.1022559048335474,1)

julia> min(a)
ERROR: `min` has no method matching min(::Array{Float64,1})

[David van Leeuwen]

That's called `minimum()`.  `min()` finds the minimum of all its arguments. 

 - `minimum(a::Array)`

 - `indmin(a::Array)`

 - `min(args...)`

[Alexander Flyax]

Thanks!