Method read

src/org/opensourcephysics/display/Histogram.java:185–217

Reads a file and appends the data contained in the file to this Histogram. The format of the file is bins \t occurrences. Lines beginning with # and empty lines are ignored. @param inputPathName A pathname string. @exception java.io.IOException Description of the Exception

(String inputPathName)

	 * @exception java.io.IOException Description of the Exception
	 */
	public void read(String inputPathName) throws java.io.IOException {
		java.io.BufferedReader reader = new java.io.BufferedReader(new java.io.FileReader(inputPathName));
		String s = null;
		while ((s = reader.readLine()) != null) {
			s = s.trim();
			if (s.equals("") || (s.length() == 0) || (s.charAt(0) == '#')) { // ignore empty lines and //$NON-NLS-1$
																				// lines beginning with #
				continue;
			}
			try {
				java.util.StringTokenizer st = new java.util.StringTokenizer(s, "\t"); //$NON-NLS-1$
				int binNumber = Integer.parseInt(st.nextToken());
				double numberOfoccurrences = Double.parseDouble(st.nextToken());
				Double prioroccurrences = bins.get(Integer.valueOf(binNumber));
				if (prioroccurrences == null) { // first occurence for this bin
					bins.put(Integer.valueOf(binNumber), new Double(numberOfoccurrences));
				} else {
					numberOfoccurrences += prioroccurrences.doubleValue(); // increase occurrences for bin by
																			// prioroccurrences
					bins.put(Integer.valueOf(binNumber), new Double(numberOfoccurrences));
				}
				ymax = Math.max(numberOfoccurrences, ymax);
				xmin = Math.min(binNumber * binWidth + binOffset, xmin);
				xmax = Math.max(binNumber * binWidth + binWidth + binOffset, xmax);
			} catch (java.util.NoSuchElementException nsee) {
				nsee.printStackTrace();
			} catch (NumberFormatException nfe) {
				nfe.printStackTrace();
			}
		}
		reader.close();
		dataChanged = true;
	}

	/**
	 * Creates a string representation of this Histogram. The bins are displayed in