I try to code

```
using SparseArrays
using Distributions
sprandn(100,100,0.3,Uniform(-1,1))
```

But it failed. So how to generate a sparse matrix obeying (-1,1) uniform distribution? Thanks

I try to code

```
using SparseArrays
using Distributions
sprandn(100,100,0.3,Uniform(-1,1))
```

But it failed. So how to generate a sparse matrix obeying (-1,1) uniform distribution? Thanks

You need `sprand`

rather than `sprandn`

, and the last argument should be a function that maps `n`

to a vector of `n`

samples (though the docs don’t seem to say so anywhere).

```
sprand(100,100,0.1,n->rand(Uniform(-1,1),n))
```