How to sum two matrices by seq_along in r?
<p>I have two matrices that i want to sum</p>

<pre><code>mat1&lt;-matrix(1:4,2,2)    
mat2&lt;-matrix(5:8,2,2)
mat1
     [,1] [,2]
[1,]    1    3
[2,]    2    4

mat2
 [,1] [,2]
[1,]    5    7
[2,]    6    8
</code></pre>

<p>what i want is this</p>

<pre><code>mat_sum
     [,1] [,2]
[1,]    6   10
[2,]    8   12 
</code></pre>

<p>I tried </p>

<pre><code>mat_sum &lt;- sapply(seq_along(mat1), function(i)
mat1[[i]]+mat2[[i]])
</code></pre>

<p>but then it doesnt return a matrix</p>

<pre><code>[1]  6  8 10 12
</code></pre>

<p>How can i get it to return a matrix?</p>