How does one expand nested array elements when viewing them?

Expand the transpose(hlist) array.

• Expand an individual array element of a nested array is ok.
• Make the array navigator show the elements that correspond to its position on the line is ok.

Time for a Mathcad Prime 10 update and a crossover thread discussion.   First, the crossover, ...

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@terryhendicott wrote:
@@Werner_E wrote
@@terryhendicott

 

How did you manage to scroll all three vectors to the very same position?

I never succeed doing so as those silly sliders are much to inaccurate and as far as I have seen its not possible to use the keyboard.

 

I agree @@Werner_E navigating these large vectors is a difficult process.  Getting them lined up requires a steady hand on the mouse and plenty of patience.

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Maybe it's just me, or perhaps it's moving from my old Dell to my newer Dell, but it seems slightly easier to select the slider and the slider seems more persistent, allowing more time to move the pointer onto and move it.

However, when, a la Werner, I tried the (intuitive) use of the keyboard arrow keys, the slider disappeared.   It would be better (IMO) if the slider replicated the Advanced Control Slider protocol; for example:

up, down - single element move;

ctrl-up, ctrl-down - page move (where a page is however many rows are visible in the vector);

PgUp (Fn up-arrow), PgDn (Fn right-arrow) - beginning, end move. 

Similar behaviour would apply to left and right arrows wrt columns.

Not only would this make the matrix easier to navigate, but it would introduce a degree of consistency between the advanced control and matrix navigator. 

I note that the matrix navigator must, perforce, allow consistency of movement operations in each of the (currently!) two dimensions.  I'm presuming that the Advanced Control Slider uses the Home and End keys for moving to the start and finish of the slider's range of movement because it only moves in one dimension.  I think the Slider operation would have to change to match any putative matrix navigator arrow-key operations - I'm not sure whether it would be more intuitive to use one set of arrows irrespective of slider orientation or align the arrow key sets with the slider.

@Catalina - Do you know if there are any plans to improve the ergonomics of the matrix navigator window?

On to the star of the show, the updated Mathcad Prime 10 worksheet.  

AFAICT, things are pretty much the same as in Mathcad Prime 7.

See worksheet for a few more examples of nested array manipulation.

You can ignore the rest of this message if you want.

What follows is one my usual streams of unconsciousness that flow like dried up brooks in a desert heatwave.  Having just evaluated the slightly more extreme case of nested matrices, my thoughts meandered off in other directions, cutting off the previous nested array sizing thread like an oxbow lake.

Apart from wishing for more nuanced matrix navigator and nested array size control, a few other ideas sprung to mind as I was constructing the amended worksheet.

The implicit feature request hidden in FR 1 is the ability to evaluate a Picture Operator in an array (and a text region!).

It would be quite neat if ctrl-shift-m carried out the FR 3 text to variable conversion, rather than replacing selected text with a math region as it does now.  The ability to toggle text-to-math conversion would be useful, as well.

Oh, and talking of Text Regions, tab stops would be a very welcome restoration of capability. 

Stuart

Attention @WernerE  and @terryhendicott