Table: add selectRows.m and selectColumns.m

mattools · Mar 26, 2021 · f29364f · f29364f
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diff --git a/matStats/@Table/selectColumns.m b/matStats/@Table/selectColumns.m
@@ -0,0 +1,31 @@
+function res = selectColumns(obj, inds)
+% Seelct a subset of the table based on columns indices.
+%
+%   RES = selectColumns(TAB, INDS)
+%
+%   Example
+%     tab = Table.read('fisherIris');
+%     tab2 = selectColumns(tab, 1:4);
+%     size(tab2)
+%     ans =
+%        150     4
+%
+%
+%   See also
+%     selectRows
+
+% ------
+% Author: David Legland
+% e-mail: [email protected]
+% INRAE - BIA Research Unit - BIBS Platform (Nantes)
+% Created: 2021-03-26,    using Matlab 9.8.0.1323502 (R2020a)
+% Copyright 2021 INRAE.
+
+newData = obj.Data(:, inds);
+colNames = {};
+if ~isempty(obj.ColNames)
+    colNames = obj.ColNames(inds);
+end
+
+% transform data
+res = Table(newData, 'ColNames', colNames, 'Parent', obj);
diff --git a/matStats/@Table/selectRows.m b/matStats/@Table/selectRows.m
@@ -0,0 +1,31 @@
+function res = selectRows(obj, inds)
+% Seelct a subset of the table based on row indices.
+%
+%   RES = selectRows(TAB, INDS)
+%
+%   Example
+%     tab = Table.read('fisherIris');
+%     tab2 = selectRows(tab, 1:5:150);
+%     size(tab2)
+%     ans =
+%         30     5
+%
+%   See also
+%     selectColumns
+%
+
+% ------
+% Author: David Legland
+% e-mail: [email protected]
+% INRAE - BIA Research Unit - BIBS Platform (Nantes)
+% Created: 2021-03-26,    using Matlab 9.8.0.1323502 (R2020a)
+% Copyright 2021 INRAE.
+
+newData = obj.Data(inds, :);
+rowNames = {};
+if ~isempty(obj.RowNames)
+    rowNames = obj.RowNames(inds);
+end
+
+% transform data
+res = Table(newData, 'RowNames', rowNames, 'Parent', obj);