IFD:PhysicalComp2011: Difference between revisions

IFD:PhysicalComp2011 (view source)

Revision as of 15:48, 14 November 2011

2,699 bytes added , 14 November 2011

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Frederic Gmeiner

213

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 [http://processing.org/learning/basics/sine.html sin() Example] <br />
 [http://processing.org/learning/trig/ General introduction] (Try out the sketch by copy-pasting it into your processing editor)
+<br /><br />
+== 14.11.2011 Processing sketches ==
+=== Import data files===
+<source lang="java">
+class Table {
+  int rowCount;
+  String[][] data;
+  Table(String filename) {
+    String[] rows = loadStrings(filename);
+    data = new String[rows.length][];
+    for (int i = 0; i < rows.length; i++) {
+      if (trim(rows[i]).length() == 0) {
+        continue; // skip empty rows
+      }
+      if (rows[i].startsWith("#")) {
+        continue;  // skip comment lines
+      }
+      // split the row on the tabs
+      String[] pieces = split(rows[i], TAB);
+      // copy to the table array
+      data[rowCount] = pieces;
+      rowCount++;
+      // this could be done in one fell swoop via:
+      //data[rowCount++] = split(rows[i], TAB);
+    }
+    // resize the 'data' array as necessary
+    data = (String[][]) subset(data, 0, rowCount);
+  }
+  int getRowCount() {
+    return rowCount;
+  }
+  // find a row by its name, returns -1 if no row found
+  int getRowIndex(String name) {
+    for (int i = 0; i < rowCount; i++) {
+      if (data[i][0].equals(name)) {
+        return i;
+      }
+    }
+    println("No row named '" + name + "' was found");
+    return -1;
+  }
+  String getRowName(int row) {
+    return getString(row, 0);
+  }
+  String getString(int rowIndex, int column) {
+    return data[rowIndex][column];
+  }
+  String getString(String rowName, int column) {
+    return getString(getRowIndex(rowName), column);
+  }
+  int getInt(String rowName, int column) {
+    return parseInt(getString(rowName, column));
+  }
+  int getInt(int rowIndex, int column) {
+    return parseInt(getString(rowIndex, column));
+  }
+  float getFloat(String rowName, int column) {
+    return parseFloat(getString(rowName, column));
+  }
+  float getFloat(int rowIndex, int column) {
+    return parseFloat(getString(rowIndex, column));
+  }
+  void setRowName(int row, String what) {
+    data[row][0] = what;
+  }
+  void setString(int rowIndex, int column, String what) {
+    data[rowIndex][column] = what;
+  }
+  void setString(String rowName, int column, String what) {
+    int rowIndex = getRowIndex(rowName);
+    data[rowIndex][column] = what;
+  }
+  void setInt(int rowIndex, int column, int what) {
+    data[rowIndex][column] = str(what);
+  }
+  void setInt(String rowName, int column, int what) {
+    int rowIndex = getRowIndex(rowName);
+    data[rowIndex][column] = str(what);
+  }
+  void setFloat(int rowIndex, int column, float what) {
+    data[rowIndex][column] = str(what);
+  }
+  void setFloat(String rowName, int column, float what) {
+    int rowIndex = getRowIndex(rowName);
+    data[rowIndex][column] = str(what);
+  }
+}
+</source>
 <br /><br />