Examples with ExpressionParser edu.cmu.tetrad.calculator.parser.ExpressionParser used on opensource projects

Example 11 with ExpressionParser

use of edu.cmu.tetrad.calculator.parser.ExpressionParser in project tetrad by cmu-phil.

the class GeneralizedSemPm method setVariablesTemplate.

public void setVariablesTemplate(String variablesTemplate) throws ParseException {
    if (variablesTemplate == null) {
        throw new NullPointerException();
    }
    // Test to make sure it's parsable.
    ExpressionParser parser = new ExpressionParser();
    parser.parseExpression(variablesTemplate);
    this.variablesTemplate = variablesTemplate;
}

Example 12 with ExpressionParser

use of edu.cmu.tetrad.calculator.parser.ExpressionParser in project tetrad by cmu-phil.

the class GeneralizedSemPm method setParametersEstimationInitializationTemplate.

public void setParametersEstimationInitializationTemplate(String parametersTemplate) throws ParseException {
    if (parametersTemplate == null) {
        throw new NullPointerException();
    }
    // Test to make sure it's parsable.
    ExpressionParser parser = new ExpressionParser();
    parser.parseExpression(parametersTemplate);
    this.parametersEstimationInitializationTemplate = parametersTemplate;
}

Example 13 with ExpressionParser

use of edu.cmu.tetrad.calculator.parser.ExpressionParser in project tetrad by cmu-phil.

the class GeneralizedTemplateEditor method listen.

private void listen() {
    String expressionString = expressionTextPane.getText();
    ExpressionParser parser = new ExpressionParser();
    try {
        if (!"".equals(expressionString.trim())) {
            parser.parseExpression(expressionString);
        }
        color = Color.BLACK;
        start = 0;
        stringWidth = expressionString.length();
        recolorTime = System.currentTimeMillis();
        String startsWithText = startsWithField.getValue().trim();
        if ("Variables".equals(combo.getSelectedItem())) {
            if (!"".equals(expressionString.trim())) {
            // getSemPm().setVariablesTemplate(expressionString);
            }
        } else if ("Errors".equals(combo.getSelectedItem())) {
            if (!"".equals(expressionString.trim())) {
            // getSemPm().setErrorsTemplate(expressionString);
            }
        } else if ("Parameter Initializations".equals(combo.getSelectedItem())) {
            if (!"".equals(startsWithText.trim())) {
                getSemPm().setStartsWithParametersTemplate(startsWithText, expressionString);
            }
        // getSemPm().setParametersTemplate(expressionString);
        } else if ("Estimation Starting Values".equals(combo.getSelectedItem())) {
            if (!"".equals(startsWithText.trim())) {
                getSemPm().setStartsWithParametersEstimationInitializaationTemplate(startsWithText, expressionString);
            }
        // getSemPm().setParametersEstimationInitializationTemplate(expressionString);
        }
    } catch (ParseException e) {
        color = Color.RED;
        start = e.getErrorOffset();
        stringWidth = parser.getNextOffset() - e.getErrorOffset();
        recolorTime = System.currentTimeMillis();
    }
    this.latestParser = parser;
}

Example 14 with ExpressionParser

use of edu.cmu.tetrad.calculator.parser.ExpressionParser in project tetrad by cmu-phil.

the class GeneralizedExpressionEditor method listen.

private void listen() {
    String expressionString = expressionTextPane.getText();
    String valueExpressionString;
    ExpressionParser parser = new ExpressionParser(otherVariables, ExpressionParser.RestrictionType.MAY_NOT_CONTAIN);
    try {
        if (!"".equals(expressionString)) {
            parser.parseExpression(expressionString);
        }
        color = Color.BLACK;
        start = 0;
        stringWidth = expressionString.length();
        recolorTime = System.currentTimeMillis();
        valueExpressionString = expressionString;
    } catch (ParseException e) {
        color = Color.RED;
        start = e.getErrorOffset();
        stringWidth = parser.getNextOffset() - e.getErrorOffset();
        recolorTime = System.currentTimeMillis();
        valueExpressionString = null;
    }
    if (valueExpressionString != null) {
        String formula = expressionTextPane.getText();
        if (node != null) {
            if (node.getNodeType() != NodeType.ERROR && !formula.contains(errorNode.getName()) && errorTermCheckBox.isSelected()) {
                if (!formula.trim().endsWith("+") && !"".equals(formula)) {
                    formula += " + ";
                }
                formula += errorNode.getName();
            }
            this.expressionString = formula;
            if (node.getNodeType() == NodeType.ERROR) {
                resultTextPane.setText(node + " ~ " + formula);
            } else {
                resultTextPane.setText(node + " = " + formula);
            }
        } else if (parameter != null) {
            this.expressionString = formula;
            resultTextPane.setText(parameter + " ~ " + formula);
        }
        referencedParametersLabel.setText("Parameters:  " + parameterString(parser));
    }
    this.latestParser = parser;
}

Example 15 with ExpressionParser

use of edu.cmu.tetrad.calculator.parser.ExpressionParser in project tetrad by cmu-phil.

the class Transformation method transformEquation.

// ======================== Private Methods ============================//
/**
 * Transforms the given dataset using the given equation.
 */
private static void transformEquation(DataSet data, String eq) throws ParseException {
    ExpressionParser parser = new ExpressionParser(data.getVariableNames(), ExpressionParser.RestrictionType.MAY_ONLY_CONTAIN);
    Equation equation = parser.parseEquation(eq);
    addVariableIfRequired(data, equation.getVariable());
    Expression expression = equation.getExpression();
    Node variable = data.getVariable(equation.getVariable());
    if (variable == null) {
        throw new IllegalStateException("Unknown variable " + equation.getVariable());
    }
    int column = data.getColumn(variable);
    // build the context pairs.
    List<String> contextVars = getContextVariables(expression);
    // now do the transformation row by row.
    DataBackedContext context = new DataBackedContext(data, contextVars);
    int rows = data.getNumRows();
    for (int row = 0; row < rows; row++) {
        // build the context
        context.setRow(row);
        double newValue = expression.evaluate(context);
        data.setDouble(row, column, newValue);
    }
}