public void testScalarToText() {
final OctaveObject integer42 = Octave.scalar(42);
assertEquals(
"" //
+ "# name: ans\n" //
+ "# type: scalar\n" //
+ "42.0\n" //
,
OctaveIO.toText(integer42));
final OctaveObject integer43 = Octave.scalar(43);
assertEquals(
"# name: integer43\n# type: scalar\n43.0\n", OctaveIO.toText(integer43, "integer43"));
}
/** @throws Exception */
public void testOctaveSetExecGet() throws Exception {
final double[] numbers = {1, 2, 3, 4, 5, 6};
final OctaveEngine octave = new OctaveEngineFactory().getScriptEngine();
final OctaveDouble in = new OctaveDouble(numbers, 2, 3);
octave.put("in", in);
octave.eval("out=in;");
final OctaveDouble out = octave.get(OctaveDouble.class, "out");
assertEquals(OctaveIO.toText(in), OctaveIO.toText(out));
octave.eval("slicerow=in(2,:); slicecol=in(:,2);");
final OctaveDouble slicerow = octave.get(OctaveDouble.class, "slicerow");
final OctaveDouble slicecol = octave.get(OctaveDouble.class, "slicecol");
assertEquals(2.0, slicerow.get(1, 1));
assertEquals(4.0, slicerow.get(1, 2));
assertEquals(6.0, slicerow.get(1, 3));
assertEquals(3.0, slicecol.get(1, 1));
assertEquals(4.0, slicecol.get(2, 1));
octave.close();
}
@Override
public OctaveCell read(final BufferedReader reader) {
String line;
String token;
line = OctaveIO.readerReadLine(reader);
token = "# rows: ";
if (!line.startsWith(token)) {
throw new OctaveParseException("Expected <" + token + ">, but got <" + line + ">");
}
final int nrows = Integer.parseInt(line.substring(token.length()));
line = OctaveIO.readerReadLine(reader);
token = "# columns: ";
if (!line.startsWith(token)) {
throw new OctaveParseException("Expected <" + token + ">, but got <" + line + ">");
}
final int ncols = Integer.parseInt(line.substring(token.length()));
final OctaveCell octaveCell = new OctaveCell(nrows, ncols);
for (int col = 1; col <= ncols; col++) {
for (int row = 1; row <= nrows; row++) {
line = OctaveIO.readerReadLine(reader);
token = "# name: <cell-element>";
if (!line.equals(token)) {
throw new OctaveParseException("Expected <" + token + ">, but got <" + line + ">");
}
final OctaveType octaveType = OctaveIO.read(reader);
octaveCell.set(row, col, octaveType);
}
line = OctaveIO.readerReadLine(reader);
token = "";
if (!line.equals(token)) {
throw new OctaveParseException("Expected <" + token + ">, but got <" + line + ">");
}
}
return octaveCell;
}
/** Test */
public void test3dToText() {
final OctaveDouble matrix = new OctaveDouble(3, 4, 2);
assertEquals(
"" //
+ "# name: matrix3d\n" //
+ "# type: matrix\n" //
+ "# ndims: 3\n" //
+ " 3 4 2\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ "",
OctaveIO.toText(matrix, "matrix3d"));
matrix.set(42.0, 1, 3, 2);
assertEquals(
"" //
+ "# name: matrix3d\n" //
+ "# type: matrix\n" //
+ "# ndims: 3\n" //
+ " 3 4 2\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ " 42.0\n 0.0\n 0.0\n" //
+ " 0.0\n 0.0\n 0.0\n" //
+ "",
OctaveIO.toText(matrix, "matrix3d"));
}
/** @throws Exception */
public void testEmpty2dToText() throws Exception {
final OctaveDouble matrix = new OctaveDouble(0, 0);
assertEquals(0, matrix.size(1));
assertEquals(0, matrix.size(2));
assertEquals(
""
+ //
"# name: matrix\n"
+ //
"# type: matrix\n"
+ //
"# rows: 0\n"
+ //
"# columns: 0\n"
+ //
"" //
,
OctaveIO.toText(matrix, "matrix"));
}
/** @throws Exception */
public void testOctaveGet() throws Exception {
final OctaveEngine octave = new OctaveEngineFactory().getScriptEngine();
octave.eval("m=[1 2;3 4];");
final OctaveDouble m = octave.get(OctaveDouble.class, "m");
assertEquals(
""
+ //
"# name: m\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 2\n"
+ //
" 1.0 2.0\n"
+ //
" 3.0 4.0\n" //
,
OctaveIO.toText(m, "m"));
octave.close();
}
/** @throws Exception */
public void test2dToText() throws Exception {
final double[] numbers = {1, 2, 3, 4, 5, 6};
final OctaveDouble matrix = new OctaveDouble(numbers, 2, 3);
assertEquals(2, matrix.size(1));
assertEquals(3, matrix.size(2));
assertEquals(
""
+ //
"# name: mymatrix\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 3\n"
+ //
" 1.0 3.0 5.0\n"
+ //
" 2.0 4.0 6.0\n" //
,
OctaveIO.toText(matrix, "mymatrix"));
}
/**
* @param <T> the type of the return value
* @param key the name of the variable
* @return the value from octave or null if the variable does not exist
* @throws OctaveClassCastException If the value can not be cast to T
*/
@SuppressWarnings("unchecked")
public <T extends OctaveType> T get(final String key) {
return (T) octaveIO.get(key);
}
/**
* Sets all the mappings in the specified map as variables in octave. These mappings replace any
* variable that octave had for any of the keys currently in the specified map.
*
* @param vars the variables to be stored in octave
*/
public void putAll(final Map<String, OctaveType> vars) {
octaveIO.set(vars);
}
/**
* Sets a value in octave.
*
* @param key the name of the variable
* @param value the value to set
*/
public void put(final String key, final OctaveType value) {
octaveIO.set(Collections.singletonMap(key, value));
}
/** Test */
public void testEmpty3dToText() {
final OctaveDouble matrix = new OctaveDouble(0, 0, 0);
assertEquals(
"# name: matrix3d\n# type: matrix\n# ndims: 3\n 0 0 0\n",
OctaveIO.toText(matrix, "matrix3d"));
}
/** Test */
public void testOctaveNdMatrix() {
final OctaveEngine octave = new OctaveEngineFactory().getScriptEngine();
final TreeMap<String, OctaveObject> vars = new TreeMap<String, OctaveObject>();
final double[] bigdata = new double[2 * 3 * 4];
for (int idx = 0; idx < bigdata.length; idx++) {
bigdata[idx] = idx + 1.0;
}
final double[] data2d = {1.0, 2.0, 3.0, 5.0, 8.0, 13.0};
final double[] datascalar = {42.0};
vars.put("bigmatrix", new OctaveDouble(bigdata, 1, 2, 3, 4));
vars.put("matrix2d", new OctaveDouble(data2d, 2, 3));
vars.put("matrixscalar", new OctaveDouble(datascalar, 1, 1));
vars.put("matrixzero", new OctaveDouble(0, 0, 0, 0));
vars.put("matrixzero2d", new OctaveDouble(0, 0));
octave.putAll(vars);
final OctaveDouble matrixzero = octave.get(OctaveDouble.class, "matrixzero");
final OctaveDouble matrix2d = octave.get(OctaveDouble.class, "matrix2d");
final OctaveDouble bigmatrix = octave.get(OctaveDouble.class, "bigmatrix");
final OctaveDouble matrixzero2d = octave.get(OctaveDouble.class, "matrixzero2d");
final OctaveDouble matrixscalar = octave.get(OctaveDouble.class, "matrixscalar");
assertEquals(matrixzero, vars.get("matrixzero"));
assertEquals(matrixzero2d, vars.get("matrixzero2d"));
assertEquals(matrixscalar, vars.get("matrixscalar"));
assertEquals(matrix2d, vars.get("matrix2d"));
assertEquals(bigmatrix, vars.get("bigmatrix"));
octave.close();
assertEquals(
""
+ //
"# name: matrixzero2d\n"
+ //
"# type: matrix\n"
+ //
"# rows: 0\n"
+ //
"# columns: 0\n" //
,
OctaveIO.toText(matrixzero2d, "matrixzero2d"));
assertEquals(
""
+ //
"# name: matrixzero\n"
+ //
"# type: matrix\n"
+ //
"# ndims: 4\n"
+ //
" 0 0 0 0\n" //
,
OctaveIO.toText(matrixzero, "matrixzero"));
assertEquals(
""
+ //
"# name: matrixscalar\n"
+ //
"# type: scalar\n"
+ //
"42.0\n" //
,
OctaveIO.toText(matrixscalar, "matrixscalar"));
assertEquals(
""
+ //
"# name: matrix2d\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 3\n"
+ //
" 1.0 3.0 8.0\n"
+ //
" 2.0 5.0 13.0\n" //
,
OctaveIO.toText(matrix2d, "matrix2d"));
assertEquals(
""
+ //
"# name: bigmatrix\n"
+ //
"# type: matrix\n"
+ //
"# ndims: 4\n"
+ //
" 1 2 3 4\n"
+ //
" 1.0\n"
+ //
" 2.0\n"
+ //
" 3.0\n"
+ //
" 4.0\n"
+ //
" 5.0\n"
+ //
" 6.0\n"
+ //
" 7.0\n"
+ //
" 8.0\n"
+ //
" 9.0\n"
+ //
" 10.0\n"
+ //
" 11.0\n"
+ //
" 12.0\n"
+ //
" 13.0\n"
+ //
" 14.0\n"
+ //
" 15.0\n"
+ //
" 16.0\n"
+ //
" 17.0\n"
+ //
" 18.0\n"
+ //
" 19.0\n"
+ //
" 20.0\n"
+ //
" 21.0\n"
+ //
" 22.0\n"
+ //
" 23.0\n"
+ //
" 24.0\n" //
,
OctaveIO.toText(bigmatrix, "bigmatrix"));
}
/** @throws Exception */
public void test2dToTextB() throws Exception {
final OctaveDouble matrix = new OctaveDouble(2, 3);
assertEquals(2, matrix.size(1));
assertEquals(3, matrix.size(2));
assertEquals(
""
+ //
"# name: matrix\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 3\n"
+ //
" 0.0 0.0 0.0\n"
+ //
" 0.0 0.0 0.0\n" //
,
OctaveIO.toText(matrix, "matrix"));
matrix.set(42, 1, 2);
assertEquals(
""
+ //
"# name: myother\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 3\n"
+ //
" 0.0 42.0 0.0\n"
+ //
" 0.0 0.0 0.0\n" //
,
OctaveIO.toText(matrix, "myother"));
matrix.set(2, 2, 1);
assertEquals(
""
+ //
"# name: myother\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 3\n"
+ //
" 0.0 42.0 0.0\n"
+ //
" 2.0 0.0 0.0\n" //
,
OctaveIO.toText(matrix, "myother"));
matrix.set(4.0, 2, 2);
assertEquals(
""
+ //
"# name: myother\n"
+ //
"# type: matrix\n"
+ //
"# rows: 2\n"
+ //
"# columns: 3\n"
+ //
" 0.0 42.0 0.0\n"
+ //
" 2.0 4.0 0.0\n" //
,
OctaveIO.toText(matrix, "myother"));
}