added indexing abstractions for row and column indices.

svn path=/trunk/externals/iem/iemmatrix/; revision=5638

17 files changed, 679 insertions, 0 deletions

diff --git a/abs/mtx_fill_col_grid-help.pd b/abs/mtx_fill_col_grid-help.pd
new file mode 100644
index 0000000..19c5142
--- /dev/null
+++ b/abs/mtx_fill_col_grid-help.pd
@@ -0,0 +1,34 @@
+#N canvas 162 457 841 379 10;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X obj 33 85 t b b b;
+#X text 43 34 [mtx_fill_col_grid];
+#X text 166 69 fills values into to the col indices of given matrix.
+;
+#X text 424 184 inletA: matrix/vector values for fill;
+#X text 424 197 inletB: matrix/vector to fill values into;
+#X text 424 211 inletC: matrix/vector indices for filling;
+#X text 422 231 outleA: matrix containing the inserted values;
+#X msg 193 111 3 4;
+#X obj 193 133 mtx_zeros;
+#X msg 33 112 matrix 1 6 1 2 3 4 5 6;
+#X msg 310 107 matrix 1 2 4 2;
+#X obj 75 133 mtx_print A_fill;
+#X obj 33 232 mtx_print output;
+#X obj 193 158 mtx_print B_orig;
+#X obj 310 158 mtx_print C_col;
+#X obj 33 194 mtx_fill_col_grid;
+#X connect 0 0 3 0;
+#X connect 2 0 18 0;
+#X connect 2 1 14 0;
+#X connect 3 0 12 0;
+#X connect 3 1 10 0;
+#X connect 3 2 13 0;
+#X connect 10 0 11 0;
+#X connect 11 0 16 0;
+#X connect 11 0 18 1;
+#X connect 12 0 2 0;
+#X connect 13 0 17 0;
+#X connect 13 0 18 2;
+#X connect 18 0 15 0;
diff --git a/abs/mtx_fill_col_grid.pd b/abs/mtx_fill_col_grid.pd
new file mode 100644
index 0000000..9bcca98
--- /dev/null
+++ b/abs/mtx_fill_col_grid.pd
@@ -0,0 +1,57 @@
+#N canvas 597 0 516 388 10;
+#X obj 70 20 inlet;
+#X obj 70 41 t a a;
+#X obj 119 87 mtx_size;
+#X obj 200 20 inlet;
+#X text 68 4 matrix;
+#X obj 200 40 mtx_:;
+#X obj 184 86 mtx;
+#X obj 184 106 mtx_repmat;
+#X obj 184 129 t a a;
+#X obj 223 129 mtx_size;
+#X obj 223 170 mtx_:;
+#X obj 223 250 mtx_repmat;
+#X obj 184 271 mtx_+;
+#X obj 15 328 outlet;
+#X text 246 20 col_idcs;
+#X obj 119 107 t b f;
+#X obj 223 190 mtx_transpose;
+#X obj 223 210 mtx_- 1;
+#X obj 223 230 mtx_* 1;
+#X msg 274 149 1 \$1;
+#X msg 249 84 \$1 1;
+#X msg 223 150 1 \$1;
+#X obj 15 19 inlet;
+#X text 18 4 matrix;
+#X text 75 -10 orig;
+#X text 13 -9 fill;
+#X obj 15 304 mtx_fill;
+#X text 291 98 fills in elements into;
+#X text 302 120 the given columns;
+#X text 331 145 of a matrix;
+#X connect 0 0 1 0;
+#X connect 1 0 2 0;
+#X connect 1 1 26 1;
+#X connect 2 0 15 0;
+#X connect 2 1 18 1;
+#X connect 3 0 5 0;
+#X connect 5 0 6 1;
+#X connect 6 0 7 0;
+#X connect 7 0 8 0;
+#X connect 8 0 12 0;
+#X connect 8 1 9 0;
+#X connect 9 0 21 0;
+#X connect 9 1 19 0;
+#X connect 10 0 16 0;
+#X connect 11 0 12 1;
+#X connect 12 0 26 2;
+#X connect 15 0 6 0;
+#X connect 15 1 20 0;
+#X connect 16 0 17 0;
+#X connect 17 0 18 0;
+#X connect 18 0 11 0;
+#X connect 19 0 11 1;
+#X connect 20 0 7 1;
+#X connect 21 0 10 0;
+#X connect 22 0 26 0;
+#X connect 26 0 13 0;
diff --git a/abs/mtx_fill_row_grid-help.pd b/abs/mtx_fill_row_grid-help.pd
new file mode 100644
index 0000000..25a3c2f
--- /dev/null
+++ b/abs/mtx_fill_row_grid-help.pd
@@ -0,0 +1,34 @@
+#N canvas 377 497 841 379 10;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X obj 33 85 t b b b;
+#X text 424 184 inletA: matrix/vector values for fill;
+#X text 424 197 inletB: matrix/vector to fill values into;
+#X text 424 211 inletC: matrix/vector indices for filling;
+#X text 422 231 outleA: matrix containing the inserted values;
+#X msg 224 112 3 4;
+#X obj 224 134 mtx_zeros;
+#X obj 75 133 mtx_print A_fill;
+#X obj 33 232 mtx_print output;
+#X obj 224 159 mtx_print B_orig;
+#X text 43 34 [mtx_fill_row_grid];
+#X text 166 69 fills values into to the row indices of given matrix.
+;
+#X obj 341 159 mtx_print C_row;
+#X obj 33 201 mtx_fill_row_grid;
+#X msg 341 108 matrix 1 2 3 1;
+#X msg 33 112 matrix 1 8 1 2 3 4 5 6 7 8;
+#X connect 0 0 3 0;
+#X connect 2 0 16 0;
+#X connect 2 1 10 0;
+#X connect 3 0 18 0;
+#X connect 3 1 8 0;
+#X connect 3 2 17 0;
+#X connect 8 0 9 0;
+#X connect 9 0 12 0;
+#X connect 9 0 16 1;
+#X connect 16 0 11 0;
+#X connect 17 0 15 0;
+#X connect 17 0 16 2;
+#X connect 18 0 2 0;
diff --git a/abs/mtx_fill_row_grid.pd b/abs/mtx_fill_row_grid.pd
new file mode 100644
index 0000000..80c96ef
--- /dev/null
+++ b/abs/mtx_fill_row_grid.pd
@@ -0,0 +1,60 @@
+#N canvas 191 265 450 388 10;
+#X obj 70 20 inlet;
+#X obj 70 41 t a a;
+#X obj 100 61 mtx_size;
+#X obj 200 20 inlet;
+#X text 246 20 row_idcs;
+#X text 74 3 matrix;
+#X obj 200 40 mtx_:;
+#X obj 200 78 mtx_- 1;
+#X obj 184 100 mtx;
+#X obj 184 120 mtx_* 1;
+#X obj 184 140 mtx_repmat;
+#X msg 249 118 1 \$1;
+#X obj 200 59 mtx_transpose;
+#X obj 184 159 t a a;
+#X obj 223 159 mtx_size;
+#X obj 223 218 mtx_:;
+#X obj 223 238 mtx_repmat;
+#X obj 223 198 pack 1 f;
+#X obj 222 178 t b f;
+#X msg 262 178 \$1 1;
+#X obj 151 81 t b f;
+#X obj 184 266 mtx_+;
+#X obj 9 328 outlet;
+#X text 73 -9 orig;
+#X obj 9 19 inlet;
+#X text 11 -10 fill;
+#X text 13 1 matrix;
+#X obj 9 304 mtx_fill;
+#X text 293 98 fills in elements;
+#X text 302 120 into given rows;
+#X text 310 142 of a matrix;
+#X connect 0 0 1 0;
+#X connect 1 0 27 1;
+#X connect 1 1 2 0;
+#X connect 2 1 20 0;
+#X connect 3 0 6 0;
+#X connect 6 0 12 0;
+#X connect 7 0 8 1;
+#X connect 8 0 9 0;
+#X connect 9 0 10 0;
+#X connect 10 0 13 0;
+#X connect 11 0 10 1;
+#X connect 12 0 7 0;
+#X connect 13 0 21 0;
+#X connect 13 1 14 0;
+#X connect 14 0 18 0;
+#X connect 14 1 17 1;
+#X connect 15 0 16 0;
+#X connect 16 0 21 1;
+#X connect 17 0 15 0;
+#X connect 18 0 17 0;
+#X connect 18 1 19 0;
+#X connect 19 0 16 1;
+#X connect 20 0 8 0;
+#X connect 20 1 11 0;
+#X connect 20 1 9 1;
+#X connect 21 0 27 2;
+#X connect 24 0 27 0;
+#X connect 27 0 22 0;
diff --git a/abs/mtx_fill_rowcol.pd b/abs/mtx_fill_rowcol.pd
new file mode 100644
index 0000000..b730224
--- /dev/null
+++ b/abs/mtx_fill_rowcol.pd
@@ -0,0 +1,31 @@
+#N canvas 344 107 450 300 10;
+#X obj 88 36 inlet;
+#X text 16 15 matrix;
+#X text 255 19 row idcs;
+#X text 356 19 col idcs;
+#X text 258 4 from mtx_find_rowcol:;
+#X obj 258 37 inlet;
+#X obj 361 37 inlet;
+#X obj 146 118 mtx_rowcol2index;
+#X obj 189 93 mtx;
+#X obj 88 55 t a a;
+#X obj 128 55 mtx_size;
+#X obj 189 55 t b f;
+#X obj 63 160 outlet;
+#X obj 11 35 inlet;
+#X text 91 15 matrix;
+#X text 90 4 orig;
+#X text 14 5 fill;
+#X obj 63 140 mtx_fill;
+#X connect 0 0 9 0;
+#X connect 5 0 8 1;
+#X connect 6 0 7 1;
+#X connect 7 0 17 2;
+#X connect 8 0 7 0;
+#X connect 9 0 17 1;
+#X connect 9 1 10 0;
+#X connect 10 1 11 0;
+#X connect 11 0 8 0;
+#X connect 11 1 7 2;
+#X connect 13 0 17 0;
+#X connect 17 0 12 0;
diff --git a/abs/mtx_fill_rowcol_grid-help.pd b/abs/mtx_fill_rowcol_grid-help.pd
new file mode 100644
index 0000000..12fe5f6
--- /dev/null
+++ b/abs/mtx_fill_rowcol_grid-help.pd
@@ -0,0 +1,40 @@
+#N canvas 377 497 841 379 10;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X text 424 206 inletA: matrix/vector values for fill;
+#X text 424 219 inletB: matrix/vector to fill values into;
+#X text 424 233 inletC: matrix/vector indices for filling;
+#X text 422 278 outleA: matrix containing the inserted values;
+#X obj 224 134 mtx_zeros;
+#X obj 75 133 mtx_print A_fill;
+#X obj 33 232 mtx_print output;
+#X obj 224 159 mtx_print B_orig;
+#X obj 341 159 mtx_print C_row;
+#X msg 33 112 matrix 1 8 1 2 3 4 5 6 7 8;
+#X text 31 31 [mtx_fill_rowcol_grid];
+#X obj 33 201 mtx_fill_rowcol_grid;
+#X text 425 247 inletD: matrix/vector indices for filling;
+#X text 166 69 fills values into to the row and col grid indices of
+given matrix.;
+#X msg 450 108 matrix 1 2 2 4;
+#X obj 33 85 t b b b b;
+#X obj 450 159 mtx_print D_col;
+#X msg 224 113 6 5;
+#X msg 341 108 matrix 1 2 2 5;
+#X connect 0 0 18 0;
+#X connect 2 0 14 0;
+#X connect 2 1 8 0;
+#X connect 7 0 10 0;
+#X connect 7 0 14 1;
+#X connect 12 0 2 0;
+#X connect 14 0 9 0;
+#X connect 17 0 19 0;
+#X connect 17 0 14 3;
+#X connect 18 0 12 0;
+#X connect 18 1 20 0;
+#X connect 18 2 21 0;
+#X connect 18 3 17 0;
+#X connect 20 0 7 0;
+#X connect 21 0 11 0;
+#X connect 21 0 14 2;
diff --git a/abs/mtx_fill_rowcol_grid.pd b/abs/mtx_fill_rowcol_grid.pd
new file mode 100644
index 0000000..cdae0f7
--- /dev/null
+++ b/abs/mtx_fill_rowcol_grid.pd
@@ -0,0 +1,60 @@
+#N canvas 200 516 575 378 10;
+#X text 92 2 matrix;
+#X obj 35 335 outlet;
+#X text 381 153 at the given row and col;
+#X text 381 179 grid indices;
+#X obj 35 311 mtx_fill;
+#X obj 35 21 inlet;
+#X text 29 1 matrix;
+#X text 31 -10 fill;
+#X text 89 -10 orig;
+#X text 383 98 fills in elements;
+#X text 384 124 into a matrix;
+#X obj 274 20 inlet;
+#X text 320 20 row_idcs;
+#X obj 274 40 mtx_:;
+#X obj 274 78 mtx_- 1;
+#X obj 258 159 mtx;
+#X obj 258 179 mtx_* 1;
+#X obj 258 199 mtx_repmat;
+#X msg 323 177 1 \$1;
+#X obj 274 59 mtx_transpose;
+#X obj 400 20 inlet;
+#X obj 400 40 mtx_:;
+#X obj 145 182 mtx;
+#X obj 145 203 mtx_repmat;
+#X msg 210 180 \$1 1;
+#X obj 87 20 inlet;
+#X obj 145 283 mtx_+;
+#X obj 400 63 mtx_size;
+#X obj 274 99 mtx_size;
+#X obj 87 63 t a a;
+#X obj 117 89 mtx_size;
+#X obj 168 110 t b b f;
+#X connect 4 0 1 0;
+#X connect 5 0 4 0;
+#X connect 11 0 13 0;
+#X connect 13 0 19 0;
+#X connect 14 0 28 0;
+#X connect 14 0 15 1;
+#X connect 15 0 16 0;
+#X connect 16 0 17 0;
+#X connect 17 0 26 1;
+#X connect 18 0 17 1;
+#X connect 19 0 14 0;
+#X connect 20 0 21 0;
+#X connect 21 0 22 1;
+#X connect 21 0 27 0;
+#X connect 22 0 23 0;
+#X connect 23 0 26 0;
+#X connect 24 0 23 1;
+#X connect 25 0 29 0;
+#X connect 26 0 4 2;
+#X connect 27 0 18 0;
+#X connect 28 0 24 0;
+#X connect 29 0 4 1;
+#X connect 29 1 30 0;
+#X connect 30 1 31 0;
+#X connect 31 0 22 0;
+#X connect 31 1 15 0;
+#X connect 31 2 16 1;
diff --git a/abs/mtx_find_rowcol-help.pd b/abs/mtx_find_rowcol-help.pd
new file mode 100644
index 0000000..e33db2c
--- /dev/null
+++ b/abs/mtx_find_rowcol-help.pd
@@ -0,0 +1,21 @@
+#N canvas 83 338 841 379 10;
+#X obj 111 142 mtx_print A;
+#X msg 33 88 bang;
+#X text 482 28 part of iemmatrix;
+#X text 267 190 outleA: matrix containing row indices;
+#X text 269 209 outletB: matrix containing col indices;
+#X obj 33 132 t a a;
+#X obj 33 201 mtx_print row;
+#X obj 140 200 mtx_print col;
+#X obj 33 163 mtx_find_rowcol;
+#X text 265 149 inletA: matrix/vector;
+#X text 166 69 calculates the row/col indices of the nonzero elements
+in a matrix;
+#X msg 33 112 matrix 2 3 1 0 1 0 1 1;
+#X text 43 34 [mtx_find_rowcol];
+#X connect 1 0 11 0;
+#X connect 5 0 8 0;
+#X connect 5 1 0 0;
+#X connect 8 0 6 0;
+#X connect 8 1 7 0;
+#X connect 11 0 5 0;
diff --git a/abs/mtx_index2rowcol-help.pd b/abs/mtx_index2rowcol-help.pd
new file mode 100644
index 0000000..a97304d
--- /dev/null
+++ b/abs/mtx_index2rowcol-help.pd
@@ -0,0 +1,34 @@
+#N canvas 83 338 841 379 10;
+#X obj 152 214 mtx_print A;
+#X msg 33 88 bang;
+#X text 482 28 part of iemmatrix;
+#X text 43 34 [mtx_index2rowcol];
+#X text 166 69 calculate the row and column indices w.r.t. the linear
+matrix indices used by the standard objects (e.g. mtx_find \, mtx_index
+\, mtx_fill \, ...);
+#X text 268 138 inletA: matrix/vector containing linear indices of
+a matrix;
+#X text 268 158 inletB: integer describing the number of columns of
+the indexed matrix;
+#X text 267 190 outleA: matrix containing row indices;
+#X text 269 209 outletB: matrix containing col indices;
+#X obj 33 242 mtx_index2rowcol;
+#X msg 33 112 matrix 2 3 1 1 1 1 1 1;
+#X obj 33 163 mtx_find;
+#X obj 156 160 print B;
+#X obj 90 133 mtx_size;
+#X obj 33 132 t a a;
+#X obj 33 184 t a a;
+#X obj 33 267 mtx_print row;
+#X obj 140 266 mtx_print col;
+#X connect 1 0 10 0;
+#X connect 9 0 16 0;
+#X connect 9 1 17 0;
+#X connect 10 0 14 0;
+#X connect 11 0 15 0;
+#X connect 13 1 12 0;
+#X connect 13 1 9 1;
+#X connect 14 0 11 0;
+#X connect 14 1 13 0;
+#X connect 15 0 9 0;
+#X connect 15 1 0 0;
diff --git a/abs/mtx_index_col_grid-help.pd b/abs/mtx_index_col_grid-help.pd
new file mode 100644
index 0000000..30996f6
--- /dev/null
+++ b/abs/mtx_index_col_grid-help.pd
@@ -0,0 +1,26 @@
+#N canvas 133 130 841 379 10;
+#X obj 75 133 mtx_print A;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X text 384 152 inletA: matrix/vector;
+#X obj 33 232 mtx_print output;
+#X obj 33 83 t b b b;
+#X obj 242 135 mtx_print B_row;
+#X msg 241 110 matrix 1 2 3 1;
+#X text 43 34 [mtx_index_col_grid];
+#X text 166 69 finds the values to the col grid indices in a given
+matrix.;
+#X text 384 165 inletB: col matrix/vector;
+#X text 382 199 outleA: matrix containing the indexed cols;
+#X obj 33 194 mtx_index_col_grid;
+#X msg 33 112 matrix 3 3 1 2 3 1 2 3 1 2 3;
+#X connect 1 0 6 0;
+#X connect 3 0 13 0;
+#X connect 3 1 0 0;
+#X connect 6 0 14 0;
+#X connect 6 1 8 0;
+#X connect 8 0 7 0;
+#X connect 8 0 13 1;
+#X connect 13 0 5 0;
+#X connect 14 0 3 0;
diff --git a/abs/mtx_index_col_grid.pd b/abs/mtx_index_col_grid.pd
new file mode 100644
index 0000000..bc5140a
--- /dev/null
+++ b/abs/mtx_index_col_grid.pd
@@ -0,0 +1,53 @@
+#N canvas 597 0 450 388 10;
+#X obj 70 20 inlet;
+#X obj 70 41 t a a;
+#X obj 100 61 mtx_size;
+#X obj 200 20 inlet;
+#X text 68 4 matrix;
+#X obj 200 40 mtx_:;
+#X obj 184 86 mtx;
+#X obj 184 106 mtx_repmat;
+#X obj 184 129 t a a;
+#X obj 223 129 mtx_size;
+#X obj 223 170 mtx_:;
+#X obj 223 250 mtx_repmat;
+#X obj 184 271 mtx_+;
+#X obj 70 329 outlet;
+#X text 293 98 slices out given;
+#X text 310 142 writing them into;
+#X text 318 165 a new matrix;
+#X text 246 20 col_idcs;
+#X text 302 120 columns of a matrix;
+#X obj 100 81 t b f;
+#X obj 223 190 mtx_transpose;
+#X obj 223 210 mtx_- 1;
+#X obj 223 230 mtx_* 1;
+#X msg 274 149 1 \$1;
+#X msg 249 84 \$1 1;
+#X msg 223 150 1 \$1;
+#X obj 70 305 mtx_index;
+#X connect 0 0 1 0;
+#X connect 1 0 26 0;
+#X connect 1 1 2 0;
+#X connect 2 0 19 0;
+#X connect 2 1 22 1;
+#X connect 3 0 5 0;
+#X connect 5 0 6 1;
+#X connect 6 0 7 0;
+#X connect 7 0 8 0;
+#X connect 8 0 12 0;
+#X connect 8 1 9 0;
+#X connect 9 0 25 0;
+#X connect 9 1 23 0;
+#X connect 10 0 20 0;
+#X connect 11 0 12 1;
+#X connect 12 0 26 1;
+#X connect 19 0 6 0;
+#X connect 19 1 24 0;
+#X connect 20 0 21 0;
+#X connect 21 0 22 0;
+#X connect 22 0 11 0;
+#X connect 23 0 11 1;
+#X connect 24 0 7 1;
+#X connect 25 0 10 0;
+#X connect 26 0 13 0;
diff --git a/abs/mtx_index_row_grid-help.pd b/abs/mtx_index_row_grid-help.pd
new file mode 100644
index 0000000..0ef45b5
--- /dev/null
+++ b/abs/mtx_index_row_grid-help.pd
@@ -0,0 +1,26 @@
+#N canvas 133 130 841 379 10;
+#X obj 75 133 mtx_print A;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X text 384 152 inletA: matrix/vector;
+#X text 384 165 inletB: row matrix/vector;
+#X obj 33 232 mtx_print output;
+#X obj 33 83 t b b b;
+#X obj 242 135 mtx_print B_row;
+#X text 43 34 [mtx_index_row_grid];
+#X text 166 69 finds the values to the row grid indices in a given
+matrix.;
+#X obj 33 194 mtx_index_row_grid;
+#X text 382 199 outleA: matrix containing the indexed rows;
+#X msg 33 112 matrix 3 3 1 1 1 2 2 2 3 3 3;
+#X msg 241 110 matrix 1 2 3 1;
+#X connect 1 0 7 0;
+#X connect 3 0 11 0;
+#X connect 3 1 0 0;
+#X connect 7 0 13 0;
+#X connect 7 1 14 0;
+#X connect 11 0 6 0;
+#X connect 13 0 3 0;
+#X connect 14 0 8 0;
+#X connect 14 0 11 1;
diff --git a/abs/mtx_index_row_grid.pd b/abs/mtx_index_row_grid.pd
new file mode 100644
index 0000000..8d83dad
--- /dev/null
+++ b/abs/mtx_index_row_grid.pd
@@ -0,0 +1,56 @@
+#N canvas 116 0 450 388 10;
+#X obj 70 20 inlet;
+#X obj 70 41 t a a;
+#X obj 100 61 mtx_size;
+#X obj 200 20 inlet;
+#X text 246 20 row_idcs;
+#X text 113 21 matrix;
+#X obj 200 40 mtx_:;
+#X obj 200 78 mtx_- 1;
+#X obj 184 100 mtx;
+#X obj 184 120 mtx_* 1;
+#X obj 184 140 mtx_repmat;
+#X msg 249 118 1 \$1;
+#X obj 200 59 mtx_transpose;
+#X obj 184 159 t a a;
+#X obj 223 159 mtx_size;
+#X obj 223 218 mtx_:;
+#X obj 223 238 mtx_repmat;
+#X obj 223 198 pack 1 f;
+#X obj 222 178 t b f;
+#X msg 262 178 \$1 1;
+#X obj 151 81 t b f;
+#X obj 184 266 mtx_+;
+#X obj 70 304 mtx_index;
+#X obj 70 328 outlet;
+#X text 293 98 slices out given;
+#X text 302 120 rows of a matrix;
+#X text 310 142 writing them into;
+#X text 318 165 a new matrix;
+#X connect 0 0 1 0;
+#X connect 1 0 22 0;
+#X connect 1 1 2 0;
+#X connect 2 1 20 0;
+#X connect 3 0 6 0;
+#X connect 6 0 12 0;
+#X connect 7 0 8 1;
+#X connect 8 0 9 0;
+#X connect 9 0 10 0;
+#X connect 10 0 13 0;
+#X connect 11 0 10 1;
+#X connect 12 0 7 0;
+#X connect 13 0 21 0;
+#X connect 13 1 14 0;
+#X connect 14 0 18 0;
+#X connect 14 1 17 1;
+#X connect 15 0 16 0;
+#X connect 16 0 21 1;
+#X connect 17 0 15 0;
+#X connect 18 0 17 0;
+#X connect 18 1 19 0;
+#X connect 19 0 16 1;
+#X connect 20 0 8 0;
+#X connect 20 1 11 0;
+#X connect 20 1 9 1;
+#X connect 21 0 22 1;
+#X connect 22 0 23 0;
diff --git a/abs/mtx_index_rowcol-help.pd b/abs/mtx_index_rowcol-help.pd
new file mode 100644
index 0000000..4df824b
--- /dev/null
+++ b/abs/mtx_index_rowcol-help.pd
@@ -0,0 +1,32 @@
+#N canvas 133 130 841 379 10;
+#X obj 75 133 mtx_print A;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X text 481 154 inletA: matrix/vector;
+#X text 481 167 inletB: row matrix/vector;
+#X text 481 180 inletC: col matrix/vector;
+#X text 479 201 outleA: matrix containing the indexed values;
+#X obj 33 232 mtx_print output;
+#X text 43 34 [mtx_index_rowcol];
+#X text 166 69 finds the values to the given row/col indices in a given
+matrix.;
+#X obj 33 194 mtx_index_rowcol;
+#X msg 33 112 matrix 2 3 1 2 3 4 5 6;
+#X obj 33 83 t b b b;
+#X msg 205 111 matrix 1 4 1 2 2 2;
+#X msg 381 108 matrix 1 4 2 3 1 2 3;
+#X obj 373 130 mtx_print C_col;
+#X obj 179 138 mtx_print B_row;
+#X connect 1 0 13 0;
+#X connect 3 0 11 0;
+#X connect 3 1 0 0;
+#X connect 11 0 8 0;
+#X connect 12 0 3 0;
+#X connect 13 0 12 0;
+#X connect 13 1 14 0;
+#X connect 13 2 15 0;
+#X connect 14 0 11 1;
+#X connect 14 0 17 0;
+#X connect 15 0 11 2;
+#X connect 15 0 16 0;
diff --git a/abs/mtx_index_rowcol.pd b/abs/mtx_index_rowcol.pd
new file mode 100644
index 0000000..0fdd1b6
--- /dev/null
+++ b/abs/mtx_index_rowcol.pd
@@ -0,0 +1,26 @@
+#N canvas 344 107 450 300 10;
+#X obj 63 36 inlet;
+#X text 65 15 matrix;
+#X text 230 19 row idcs;
+#X text 331 19 col idcs;
+#X text 233 4 from mtx_find_rowcol:;
+#X obj 233 37 inlet;
+#X obj 336 37 inlet;
+#X obj 121 118 mtx_rowcol2index;
+#X obj 164 93 mtx;
+#X obj 63 55 t a a;
+#X obj 103 55 mtx_size;
+#X obj 164 55 t b f;
+#X obj 63 140 mtx_index;
+#X obj 63 160 outlet;
+#X connect 0 0 9 0;
+#X connect 5 0 8 1;
+#X connect 6 0 7 1;
+#X connect 7 0 12 1;
+#X connect 8 0 7 0;
+#X connect 9 0 12 0;
+#X connect 9 1 10 0;
+#X connect 10 1 11 0;
+#X connect 11 0 8 0;
+#X connect 11 1 7 2;
+#X connect 12 0 13 0;
diff --git a/abs/mtx_index_rowcol_grid-help.pd b/abs/mtx_index_rowcol_grid-help.pd
new file mode 100644
index 0000000..8d11175
--- /dev/null
+++ b/abs/mtx_index_rowcol_grid-help.pd
@@ -0,0 +1,33 @@
+#N canvas 91 491 841 379 10;
+#X obj 75 133 mtx_print A;
+#X msg 33 59 bang;
+#X text 482 28 part of iemmatrix;
+#X obj 33 132 t a a;
+#X text 384 169 inletA: matrix/vector;
+#X obj 33 232 mtx_print output;
+#X obj 33 83 t b b b;
+#X obj 305 136 mtx_print B_row;
+#X msg 304 111 matrix 1 2 3 1;
+#X text 43 34 [mtx_index_rowcol_grid];
+#X text 166 69 finds the values to the row and col grid indices in
+a given matrix.;
+#X text 383 195 inletB: col matrix/vector;
+#X text 384 181 inletB: row matrix/vector;
+#X msg 33 112 matrix 3 3 11 12 13 21 22 23 31 32 33;
+#X obj 33 194 mtx_index_rowcol_grid;
+#X msg 416 111 matrix 1 2 2 1;
+#X obj 417 137 mtx_print B_col;
+#X text 382 216 outleA: matrix containing the grid-indexed rows and
+cols;
+#X connect 1 0 6 0;
+#X connect 3 0 14 0;
+#X connect 3 1 0 0;
+#X connect 6 0 13 0;
+#X connect 6 1 8 0;
+#X connect 6 2 15 0;
+#X connect 8 0 7 0;
+#X connect 8 0 14 1;
+#X connect 13 0 3 0;
+#X connect 14 0 5 0;
+#X connect 15 0 14 2;
+#X connect 15 0 16 0;
diff --git a/abs/mtx_index_rowcol_grid.pd b/abs/mtx_index_rowcol_grid.pd
new file mode 100644
index 0000000..3daef60
--- /dev/null
+++ b/abs/mtx_index_rowcol_grid.pd
@@ -0,0 +1,56 @@
+#N canvas -44 0 575 378 10;
+#X obj 257 20 inlet;
+#X text 303 20 row_idcs;
+#X obj 257 40 mtx_:;
+#X obj 257 78 mtx_- 1;
+#X obj 241 159 mtx;
+#X obj 241 179 mtx_* 1;
+#X obj 241 199 mtx_repmat;
+#X msg 306 177 1 \$1;
+#X obj 257 59 mtx_transpose;
+#X obj 383 20 inlet;
+#X obj 383 40 mtx_:;
+#X obj 128 182 mtx;
+#X obj 128 203 mtx_repmat;
+#X text 429 20 col_idcs;
+#X msg 193 180 \$1 1;
+#X obj 70 20 inlet;
+#X text 68 4 matrix;
+#X obj 128 283 mtx_+;
+#X obj 70 329 outlet;
+#X obj 70 305 mtx_index;
+#X text 358 98 slices out given;
+#X text 360 124 matrix rows and columns;
+#X text 356 153 at the given row and col;
+#X text 356 179 grid indices;
+#X obj 383 63 mtx_size;
+#X obj 257 99 mtx_size;
+#X obj 70 63 t a a;
+#X obj 100 89 mtx_size;
+#X obj 151 110 t b b f;
+#X connect 0 0 2 0;
+#X connect 2 0 8 0;
+#X connect 3 0 25 0;
+#X connect 3 0 4 1;
+#X connect 4 0 5 0;
+#X connect 5 0 6 0;
+#X connect 6 0 17 1;
+#X connect 7 0 6 1;
+#X connect 8 0 3 0;
+#X connect 9 0 10 0;
+#X connect 10 0 11 1;
+#X connect 10 0 24 0;
+#X connect 11 0 12 0;
+#X connect 12 0 17 0;
+#X connect 14 0 12 1;
+#X connect 15 0 26 0;
+#X connect 17 0 19 1;
+#X connect 19 0 18 0;
+#X connect 24 0 7 0;
+#X connect 25 0 14 0;
+#X connect 26 0 19 0;
+#X connect 26 1 27 0;
+#X connect 27 1 28 0;
+#X connect 28 0 11 0;
+#X connect 28 1 4 0;
+#X connect 28 2 5 1;