cisstVector Request: Accessors for a subset of fixed-size vector. about cisst HOT 5 CLOSED

I started implementing this on fixed size vectors in branch feature-vector-ref. Syntax is v.Ref<__size>(startPosition). See examples of use in:
https://github.com/jhu-cisst/cisst/blob/feature-vector-ref/cisstVector/examples/tutorial/ExampleReferences.h

Output looks like:

AsColMatrix:
     0.00000
     1.00000
     2.00000
     3.00000
AsRowMatrix:
     0.00000      1.00000      2.00000      3.00000
Ref<2>(1):
     1.00000      2.00000
Ref<2>(3) on a vector of 4 elements will throw an out of range exception
Exception received: vctFixedSizeVectorRef SetRef out of range
v4, last 2 elements replaced:
     0.00000      1.00000      5.50000      5.50000
v4, first 2 elements replaced:
    -1.00000     -1.00000      5.50000      5.50000

All input is welcome. I plan to implement a similar method on dynamic vectors, syntax will be: v.Ref(size, startPosition).

I'll check if we can assign between fixed size and dynamic Ref too so one could do: vFixed4.Ref<2>(0) = vDynamic.Ref(2, 10); // assuming vDynamic.size() large enough.

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Looks great. Should the dynamic version also use the same template syntax? Is it possible to have the same syntax for both?

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Take a look at example file (link above) for features added for dynamic vectors and assigning back and forth between fixed and dynamic Ref (ed42aa5). Also found by accident the already existing & operator, quite cool, see line 65 in example!

from cisst.

Looks great.

I recommend to use this example (no ambiguity):
vA.Ref(4) = vB.Ref(6, 4); // assign last 4 vB to first 4 elements of vA

instead of :
vA.Ref(5) = vB.Ref(5, 5); // assign second half of vB to first 5 elements
of vA

Marcin

On Fri, Jan 30, 2015 at 6:20 PM, Anton Deguet [email protected]
wrote:

Take a look at example file (link above) for features added for dynamic
vectors and assigning back and forth between fixed and dynamic Ref (
ed42aa5
ed42aa5).
Also found by accident the already existing & operator, quite cool, see
line 65 in example!

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#17 (comment).

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Added code and example for Ref() on fixed size and dynamic matrices (see 22b2201).

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