[c++/m] Fix DataArray polynomCoefficient

Fixes access to DataArray polynomCoefficient
and adds set and setNone methods on the c++ side.
Updates the attribute test function on the matlab side.

Author: mpsonntag

nix_mx.cc

@@ -211,6 +211,7 @@ void mexFunction(int            nlhs,
             .reg("setNoneUnit", SETTER(const boost::none_t, nix::DataArray, unit))
             .reg("setExpansionOrigin", SETTER(double, nix::DataArray, expansionOrigin))
             .reg("setNoneExpansionOrigin", SETTER(boost::none_t, nix::DataArray, expansionOrigin))
+            .reg("setNonePolynomCoefficients", SETTER(boost::none_t, nix::DataArray, polynomCoefficients))
             .reg("dimensions", FILTER(std::vector<nix::Dimension>, nix::DataArray, , dimensions))
             .reg("appendSetDimension", &nix::DataArray::appendSetDimension)
             .reg("appendRangeDimension", &nix::DataArray::appendRangeDimension)
@@ -231,6 +232,7 @@ void mexFunction(int            nlhs,
         methods->add("DataArray::hasSource", nixdataarray::hasSource);
         methods->add("DataArray::sourceCount", nixdataarray::sourceCount);
         methods->add("DataArray::dimensionCount", nixdataarray::dimensionCount);
+        methods->add("DataArray::setPolynomCoefficients", nixdataarray::polynomCoefficients);
 
         classdef<nix::Source>("Source", methods)
             .desc(&nixsource::describe)

src/nixdataarray.cc

@@ -21,7 +21,7 @@ namespace nixdataarray {
 
     mxArray *describe(const nix::DataArray &da) {
         struct_builder sb({ 1 }, { "id", "type", "name", "definition", "label",
-            "shape", "unit", "expansionOrigin", "polynom_coefficients" });
+            "shape", "unit", "expansionOrigin", "polynomCoefficients" });
 
         sb.set(da.id());
         sb.set(da.type());
@@ -119,4 +119,10 @@ namespace nixdataarray {
         output.set(0, da.dimensionCount());
     }
 
+    void polynomCoefficients(const extractor &input, infusor &output) {
+        nix::DataArray da = input.entity<nix::DataArray>(1);
+        std::vector<double> pc = input.vec<double>(2);
+        da.polynomCoefficients(pc);
+    }
+
 } // namespace nixdataarray

src/nixdataarray.h

@@ -35,6 +35,8 @@ namespace nixdataarray {
 
     void dimensionCount(const extractor &input, infusor &output);
 
+    void polynomCoefficients(const extractor &input, infusor &output);
+
 } // namespace nixdataarray
 
 #endif

tests/TestDataArray.m

@@ -70,6 +70,14 @@
 
     da.expansionOrigin = '';
     assert(isempty(da.expansionOrigin));
+    
+    assert(isempty(da.polynomCoefficients));
+    c = [1.1 1.2];
+    da.polynomCoefficients = c;
+    assert(da.polynomCoefficients(1) == c(1))
+    
+    da.polynomCoefficients = '';
+    assert(isempty(da.polynomCoefficients));
 end
 
 %% Test: Read all data from DataArray