water.util.TwoDimTable Maven / Gradle / Ivy
package water.util;
import water.AutoBuffer;
import water.H2O;
import water.Iced;
import water.IcedWrapper;
import java.util.Arrays;
/**
* Serializable 2D Table containing Strings or doubles
* Table can be named
* Columns and Rows can be named
* Fields can be empty
*/
public class TwoDimTable extends Iced {
private String tableHeader;
private String tableDescription;
private String[] rowHeaders;
private String[] colHeaders;
private String[] colTypes;
private String[] colFormats;
private IcedWrapper[][] cellValues;
private String colHeaderForRowHeaders;
//public static final double emptyDouble = Double.longBitsToDouble(0x7ff8000000000100L); //also a NaN, but not Double.NaN (0x7ff8000000000000)
public static final double emptyDouble = Double.MIN_VALUE*2; //Some unlikely value
/**
* Check whether a double value is considered an "empty field".
* @param d a double value
* @return true iff d represents an empty field
*/
public static boolean isEmpty(final double d) {
return Double.doubleToRawLongBits(d) == Double.doubleToRawLongBits(emptyDouble);
}
/**
* Constructor for TwoDimTable (R rows, C columns)
* @param tableHeader the table header
* @param tableDescription the table description
* @param rowHeaders R-dim array for row headers
* @param colHeaders C-dim array for column headers
* @param colTypes C-dim array for column types
* @param colFormats C-dim array with printf format strings for each column
* @param colHeaderForRowHeaders column header for row headers
*/
public TwoDimTable(String tableHeader, String tableDescription, String[] rowHeaders, String[] colHeaders, String[] colTypes,
String[] colFormats, String colHeaderForRowHeaders) {
if (tableHeader == null)
tableHeader = "";
if (tableDescription == null)
tableDescription = "";
this.colHeaderForRowHeaders = colHeaderForRowHeaders;
if (rowHeaders == null)
throw new IllegalArgumentException("rowHeaders is null");
else {
for (int r = 0; r < rowHeaders.length; ++r)
if (rowHeaders[r] == null)
rowHeaders[r] = "";
}
if (colHeaders == null)
throw new IllegalArgumentException("colHeaders is null");
else {
for (int c = 0; c < colHeaders.length; ++c)
if (colHeaders[c] == null)
colHeaders[c] = "";
}
final int rowDim = rowHeaders.length;
final int colDim = colHeaders.length;
if (colTypes == null) {
colTypes = new String[colDim];
Arrays.fill(colTypes, "string");
}
else if (colTypes.length != colDim)
throw new IllegalArgumentException("colTypes must have the same length as colHeaders");
else {
for (int c = 0; c < colDim; ++c) {
colTypes[c] = colTypes[c].toLowerCase();
if (!(colTypes[c].equals("double") || colTypes[c].equals("float") || colTypes[c].equals("int") ||
colTypes[c].equals("long") || colTypes[c].equals("string")))
throw new IllegalArgumentException("colTypes values must be one of \"double\", \"float\", \"int\", \"long\", or \"string\"");
}
}
if (colFormats == null) {
colFormats = new String[colDim];
Arrays.fill(colFormats, "%s");
}
else if (colFormats.length != colDim)
throw new IllegalArgumentException("colFormats must have the same length as colHeaders");
this.tableHeader = tableHeader;
this.tableDescription = tableDescription;
this.rowHeaders = rowHeaders;
this.colHeaders = colHeaders;
this.colTypes = colTypes;
this.colFormats = colFormats;
this.cellValues = new IcedWrapper[rowDim][colDim];
}
/**
* Constructor for TwoDimTable (R rows, C columns)
* @param tableHeader the table header
* @param tableDescription the table description
* @param rowHeaders R-dim array for row headers
* @param colHeaders C-dim array for column headers
* @param colTypes C-dim array for column types
* @param colFormats C-dim array with printf format strings for each column
* @param colHeaderForRowHeaders column header for row headers
* @param strCellValues String[R][C] array for string cell values, can be null (can provide String[R][], for example)
* @param dblCellValues double[R][C] array for double cell values, can be empty (marked with emptyDouble - happens when initialized with double[R][])
*/
public TwoDimTable(String tableHeader, String tableDescription, String[] rowHeaders, String[] colHeaders, String[] colTypes,
String[] colFormats, String colHeaderForRowHeaders, String[][] strCellValues, double[][] dblCellValues) {
this(tableHeader, tableDescription, rowHeaders, colHeaders, colTypes, colFormats, colHeaderForRowHeaders);
assert (isEmpty(emptyDouble));
assert (!Arrays.equals(new AutoBuffer().put8d(emptyDouble).buf(), new AutoBuffer().put8d(Double.NaN).buf()));
final int rowDim = rowHeaders.length;
final int colDim = colHeaders.length;
for (int c = 0; c < colDim; ++c) {
if (colTypes[c].equalsIgnoreCase("string")) {
for (String[] vec : strCellValues) {
if (vec == null)
throw new IllegalArgumentException("Null string in strCellValues");
if (vec.length != colDim)
throw new IllegalArgumentException("Each row in strCellValues must have the same length as colHeaders");
}
break;
}
}
for (int c = 0; c < colDim; ++c) {
if (!colTypes[c].equalsIgnoreCase("string")) {
for (double[] vec : dblCellValues) {
if (vec.length != colDim)
throw new IllegalArgumentException("Each row in dblCellValues must have the same length as colHeaders");
}
break;
}
}
for (int r = 0; r < rowDim; ++r) {
for (int c = 0; c < colDim; ++c) {
if (strCellValues[r] != null && strCellValues[r][c] != null &&
dblCellValues[r] != null && !isEmpty(dblCellValues[r][c]))
throw new IllegalArgumentException("Cannot provide both a String and a Double at row " + r + " and column " + c + ".");
}
}
for (int c = 0; c < colDim; ++c) {
switch (colTypes[c]) {
case "double":
case "float":
for (int r = 0; r < rowDim; ++r)
set(r, c, dblCellValues[r][c]);
break;
case "int":
for (int r = 0; r < rowDim; ++r)
set(r, c, (int) dblCellValues[r][c]);
break;
case "long":
for (int r = 0; r < rowDim; ++r)
set(r, c, (long) dblCellValues[r][c]);
break;
case "string":
for (int r = 0; r < rowDim; ++r)
set(r, c, strCellValues[r][c]);
break;
default:
throw new IllegalArgumentException("Column type " + colTypes[c] + " is not supported.");
}
}
}
/**
* Accessor for table cells
* @param row a row index
* @param col a column index
* @return Object (either String or Double or Float or Integer or Long)
*/
public Object get(final int row, final int col) { return cellValues[row][col] == null ? null : cellValues[row][col].get(); }
public String getTableHeader() { return tableHeader; }
public String getTableDescription() { return tableDescription; }
public String[] getRowHeaders() { return rowHeaders; }
public String[] getColHeaders() { return colHeaders; }
public String getColHeaderForRowHeaders() { return colHeaderForRowHeaders; }
public String[] getColTypes() { return colTypes; }
public String[] getColFormats() { return colFormats; }
public IcedWrapper[][] getCellValues() { return cellValues; }
/**
* Get row dimension
* @return int
*/
public int getRowDim() { return rowHeaders.length; }
/**
* Get col dimension
* @return int
*/
public int getColDim() { return colHeaders.length; }
/**
* Setter for table cells
* @param row a row index
* @param col a column index
* @param o Object value
*/
public void set(final int row, final int col, final Object o) {
if (o == null) {
cellValues[row][col] = null;
return;
}
if (colTypes[col].equals("double"))
cellValues[row][col] = new IcedWrapper(new Double(o.toString()));
else if (colTypes[col].equals("float"))
cellValues[row][col] = new IcedWrapper(new Float(o.toString()));
else if (colTypes[col].equals("int"))
cellValues[row][col] = new IcedWrapper(new Integer(o.toString()));
else if (colTypes[col].equals("long"))
cellValues[row][col] = new IcedWrapper(new Long(o.toString()));
else
cellValues[row][col] = new IcedWrapper(o);
}
/**
* Print table to String, using 2 spaces for padding between columns
* @return String containing the ASCII version of the table
*/
public String toString() {
return toString(2, true);
}
/**
* Print table to String, using user-given padding
* @param pad number of spaces for padding between columns
* @return String containing the ASCII version of the table
*/
public String toString(final int pad) {
return toString(pad, true);
}
private static int PRINTOUT_ROW_LIMIT = 20;
private boolean skip(int row) {
assert(PRINTOUT_ROW_LIMIT % 2 == 0);
if (getRowDim() <= PRINTOUT_ROW_LIMIT) return false;
if (row <= PRINTOUT_ROW_LIMIT/2) return false;
if (row >= getRowDim()-PRINTOUT_ROW_LIMIT/2) return false;
return true;
}
/**
* Print table to String, using user-given padding
* @param pad number of spaces for padding between columns
* @param full whether to print the full table (otherwise top 5 and bottom 5 rows only)
* @return String containing the ASCII version of the table
*/
public String toString(final int pad, boolean full) {
if (pad < 0)
throw new IllegalArgumentException("pad must be a non-negative integer");
final int rowDim = getRowDim();
final int colDim = getColDim();
final int actualRowDim = full ? rowDim : Math.min(PRINTOUT_ROW_LIMIT+1, rowDim);
final String[][] cellStrings = new String[actualRowDim + 1][colDim + 1];
for (String[] row: cellStrings)
Arrays.fill(row, "");
cellStrings[0][0] = colHeaderForRowHeaders != null ? colHeaderForRowHeaders : "";
int row = 0;
for (int r = 0; r < rowDim; ++r) {
if (!full && skip(r)) continue;
cellStrings[row+1][0] = rowHeaders[r];
row++;
}
for (int c = 0; c < colDim; ++c)
cellStrings[0][c+1] = colHeaders[c];
for (int c = 0; c < colDim; ++c) {
final String formatString = colFormats[c];
row = 0;
for (int r = 0; r < rowDim; ++r) {
if (!full && skip(r)) continue;
switch (colTypes[c]) {
case "double":
cellStrings[row + 1][c + 1] = get(r,c) == null || isEmpty((Double)get(r,c)) ? "" : String.format(formatString, (Double)cellValues[r][c].get());
break;
case "float":
cellStrings[row + 1][c + 1] = get(r,c) == null ? "" : String.format(formatString, (Float)cellValues[r][c].get());
break;
case "int":
cellStrings[row + 1][c + 1] = get(r,c) == null ? "" : String.format(formatString, (Integer)cellValues[r][c].get());
break;
case "long":
cellStrings[row + 1][c + 1] = get(r,c) == null ? "" : String.format(formatString, (Long)cellValues[r][c].get());
break;
default:
if( get(r,c) != null )
cellStrings[row+1][c+1] = String.format(formatString, cellValues[r][c]);
break;
}
row++;
}
}
final int[] colLen = new int[colDim + 1];
for (int c = 0; c <= colDim; ++c) {
for (int r = 0; r <= actualRowDim; ++r) {
colLen[c] = Math.max(colLen[c], cellStrings[r][c].length());
}
}
final StringBuilder sb = new StringBuilder();
if (tableHeader.length() > 0) {
sb.append(tableHeader);
}
if (tableDescription.length() > 0) {
sb.append(" (").append(tableDescription).append(")");
}
sb.append(":\n");
for (int r = 0; r <= actualRowDim; ++r) {
int len = colLen[0];
if (actualRowDim != rowDim && r - 1 == PRINTOUT_ROW_LIMIT/2) {
assert(!full);
sb.append("---");
} else {
if (len > 0)
sb.append(String.format("%" + colLen[0] + "s", cellStrings[r][0]));
for (int c = 1; c <= colDim; ++c) {
len = colLen[c];
if (len > 0)
sb.append(String.format("%" + (len + pad) + "s", cellStrings[r][c].equals("null") ? "" : cellStrings[r][c]));
}
}
sb.append("\n");
}
return sb.toString();
}
}
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