Editing a matrix' dimensions

09042015, 05:34 PM
(This post was last modified: 09042015 05:39 PM by pwarmuth.)
Post: #1




Editing a matrix' dimensions
Is there a better way to add rows/columns in the matrix editor than tediously inputting them one at a time via MORE > INSERT > ROW/COLUMN ? A hotkey? Perhaps a way to directly define the matrix' and/or vector's dimensions? On this same line of thinking, I know the comma key will traverse along a row withinin the matrix template (on the home or CAS screen), but is there a carriage return hotkey hidden away somewhere?


09042015, 05:50 PM
Post: #2




RE: Editing a matrix' dimensions
Those really are for just when you are trying to insert a row or column inside an existing matrix/vector. The matrix/vector will automatically grow by one when you type in the empty boxes on an empty row/column.
To do a 3x4 for example, select and empty M1. Enter it, and you should see Go> on the menu key. Type <number> ENTER <number> ENTER <number> ENTER. Now tap or arrow over to the col 2, row 2 position. Beging typing. The GO> moves you to the right after each enter. When you hit the last col, you automatically move down to your next row. This answer? Or are you seeing a different behavior? TW Although I work for the HP calculator group, the views and opinions I post here are my own. 

09042015, 06:01 PM
(This post was last modified: 09042015 06:15 PM by pwarmuth.)
Post: #3




RE: Editing a matrix' dimensions
I'm not sure how I missed that behavior. It does indeed automatically add columns as you type values into the first row. You do have to manually reset the curser to row 2 column 1 when you've finished the first row. I cannot find a key that behaves as a carriage return. However, when you type values into the second row it will automatically perform a carriage return when you reach the end of the second row and so on. The second part of question stands, however. A carriage return behavior for the matrix/vector templates would make data entry quite a bit more convenient. You can tap the touch screen, but it's a pretty small target to hit. The template does not perform an automatic carriage return at the end of row 2 and so on, but will instead add a column. Perhaps mapping the enter key to this function while the curser is within the template, or mimicking the behavior of the matrix editor for subsequent rows would be a useful addition?


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