• Newbie (44/44) Apr 29 2021 mir - Help on how to transform multidimentional arrays.
• Newbie (4/48) Apr 29 2021 Forgot to add the the first array was created using the following
• jmh530 (23/27) Apr 29 2021 What you're basically asking for the first one is to convert for
• jmh530 (3/9) Apr 29 2021 [snip]
• Newbie (40/70) Apr 29 2021 First of all thanks for your guidance and i modified your example

Newbie <www www.com> writes:

mir - Help on how to transform multidimentional arrays.


----------
| 0  1  2|
| 3  4  5|
| 6  7  8|
| 9 10 11|
|12 13 14|
----------
|15 16 17|
|18 19 20|
|21 22 23|
|24 25 26|
|27 28 29|
----------

How can i transform it into the following types of arrays.

----------
| 0 10 20|
| 1 11 21|
| 2 12 22|
| 3 13 23|
| 4 14 24|
----------
| 5 15 25|
| 6 16 26|
| 7 17 27|
| 8 18 28|
| 9 19 29|
----------

or

----------
|29 19  9|
|28 18  8|
|27 17  7|
|26 16  6|
|25 15  5|
----------
|24 14  4|
|23 13  3|
|22 12  2|
|21 11  1|
|20 10  0|
----------

Regards,
Newbie.

Newbie <www www.com> writes:

On Thursday, 29 April 2021 at 15:22:55 UTC, Newbie wrote:
 mir - Help on how to transform multidimentional arrays.


 ----------
 | 0  1  2|
 | 3  4  5|
 | 6  7  8|
 | 9 10 11|
 |12 13 14|
 ----------
 |15 16 17|
 |18 19 20|
 |21 22 23|
 |24 25 26|
 |27 28 29|
 ----------

 How can i transform it into the following types of arrays.

 ----------
 | 0 10 20|
 | 1 11 21|
 | 2 12 22|
 | 3 13 23|
 | 4 14 24|
 ----------
 | 5 15 25|
 | 6 16 26|
 | 7 17 27|
 | 8 18 28|
 | 9 19 29|
 ----------

 or

 ----------
 |29 19  9|
 |28 18  8|
 |27 17  7|
 |26 16  6|
 |25 15  5|
 ----------
 |24 14  4|
 |23 13  3|
 |22 12  2|
 |21 11  1|
 |20 10  0|
 ----------

 Regards,
 Newbie.

Forgot to add the the first array was created using the following 
code.
auto base = iota(2, 5, 3);

jmh530 <john.michael.hall gmail.com> writes:

On Thursday, 29 April 2021 at 15:26:15 UTC, Newbie wrote:
 [snip]

 Forgot to add the the first array was created using the 
 following code.
 auto base = iota(2, 5, 3);

What you're basically asking for the first one is to convert for 
row major to column major. There doesn't seem to be a specific 
function for that, but you can piece it together. The second one 
is just applying allReversed to the result of that. So we have:

```d
/+dub.sdl:
dependency "mir-algorithm" version="~>3.10.25"
+/

import std.stdio: writeln;
import mir.ndslice.topology: iota, flattened, reshape, universal;
import mir.ndslice.dynamic: transposed, allReversed;

void main() {
     auto x = iota(2, 5, 3);
     int err;
     auto y = x.flattened.reshape([3, 5, 2], err).transposed!(1, 
2);
     auto z = y.allReversed;

     writeln(x);
     writeln(y);
     writeln(z);
}
```

jmh530 <john.michael.hall gmail.com> writes:

On Thursday, 29 April 2021 at 15:56:48 UTC, jmh530 wrote:
 

 What you're basically asking for the first one is to convert 
 for row major to column major. There doesn't seem to be a 
 specific function for that, but you can piece it together. The 
 second one is just applying allReversed to the result of that. 
 So we have:

[snip]

Got an extra `universal` import there.

Newbie <www www.com> writes:

On Thursday, 29 April 2021 at 15:56:48 UTC, jmh530 wrote:
 On Thursday, 29 April 2021 at 15:26:15 UTC, Newbie wrote:
 [snip]

 Forgot to add the the first array was created using the 
 following code.
 auto base = iota(2, 5, 3);

 What you're basically asking for the first one is to convert 
 for row major to column major. There doesn't seem to be a 
 specific function for that, but you can piece it together. The 
 second one is just applying allReversed to the result of that. 
 So we have:

 ```d
 /+dub.sdl:
 dependency "mir-algorithm" version="~>3.10.25"
 +/

 import std.stdio: writeln;
 import mir.ndslice.topology: iota, flattened, reshape, 
 universal;
 import mir.ndslice.dynamic: transposed, allReversed;

 void main() {
     auto x = iota(2, 5, 3);
     int err;
     auto y = x.flattened.reshape([3, 5, 2], err).transposed!(1, 
 2);
     auto z = y.allReversed;

     writeln(x);
     writeln(y);
     writeln(z);
 }
 ```

First of all thanks for your guidance and i modified your example 
to get the results I was looking for.

auto y2 = base.flattened.reshape([3, 5, 2], err).transposed!(1, 
2);
produced the following.

---------
|0 10 20|
|1 11 21|
---------
|2 12 22|
|3 13 23|
---------
|4 14 24|
|5 15 25|
---------
|6 16 26|
|7 17 27|
---------
|8 18 28|
|9 19 29|
---------

and auto y2 = base.flattened.reshape([3, 2, 5], 
err).transposed!(1, 2);
gave me the result i was looking for.

---------
|0 10 20|
|1 11 21|
|2 12 22|
|3 13 23|
|4 14 24|
---------
|5 15 25|
|6 16 26|
|7 17 27|
|8 18 28|
|9 19 29|
---------

Thanks,
Newbie.