Package hec.heclib.grid

Class FlatGrid

java.lang.Object
hec.heclib.grid.FlatGrid
public class FlatGrid extends Object
FlatGrid.java The FlatGrid class is used for conversions between DSS gridded records and Arc/Info grids through ASCII and .flt files. The flat grid contains data and a minimum of descriptive information. The data is stored in a one-dimensional array of HecDoubles. The 1-D array maps to the 2-D grid the same way that DSS gridded data does, i.e. proceeding by row from the lower left corner. Thus, the array 1, 2, 3, 4, 5, 6, 7, 8, 9 maps to a 3x3 grid as ------- |7|8|9| |4|5|6| |1|2|3| ------- The member function setCellValue(i, j, x) inserts the value x into the grid at the ith column in the jth row, with numbering starting at 1, 1 in the lower left cell.

  • Constructor Details

    • FlatGrid

      public FlatGrid()

    • FlatGrid

      public FlatGrid(int ncols, int nrows)

  • Method Details

    • fromAscii

      public int fromAscii(BufferedReader inFile)
      fromAscii Member function populates a flat grid object from an Arc/Info ASCII grid file.

    • fromFlt

      public int fromFlt(BufferedReader hdrReader, BufferedInputStream fltStream)
      fromFlt Member function populates a flat grid object from an Arc/Info floating-point grid file. Returns -1 for an i/o error, 1 for a data or format error; 0 for success

    • fromBil

      public int fromBil(BufferedReader hdrReader, BufferedInputStream fltStream)
      fromBil Member function populates a flat grid object from an Arc/Info binary-interleave by line image file. Returns -1 for an i/o error, 1 for a data or format error; Returns 2 for unsupported feature Returns 0 for success This method was adapted very quickly from the fromFlt method above for purposes of reading EHdr output from GDALwarp. It doesn't support all the options available in the BIL format. When it hits something it probably should support but doesn't, it returns a 2

    • toAscii

      public int toAscii(BufferedWriter outFile)

    • toAscii

      public int toAscii(BufferedWriter outFile, int precision)
      toAscii function writes a flat grid object to an Arc/Info ASCII grid file.
      Parameters:
      outFile -
      precision -
      Returns:

    • toFlt

      public int toFlt(BufferedWriter hdrWriter, BufferedOutputStream fltStream)
      toFlt function writes a flat grid object to an Arc/Info ASCII grid file.
      Parameters:
      hdrWriter - , a BufferedWriter for the .hdr file
      fltStream - , a BufferedOutputStream for the .flt file
      Returns:
      an integer indicating status (C stlye)

    • getCellValue

      public double getCellValue(int col, int row)

    • setCellSize

      public void setCellSize(double size)

    • setGridSize

      public void setGridSize(int ncols, int nrows)

    • setOriginCoords

      public void setOriginCoords(double xCoord, double yCoord)

    • setOriginIndices

      public void setOriginIndices(int i, int j)

    • setData

      public void setData(double[] data)

    • setData

      public void setData(float[] data)

    • getCellSize

      public double getCellSize()

    • getNumberOfColumns

      public int getNumberOfColumns()

    • getNumberOfRows

      public int getNumberOfRows()

    • getMinXindex

      public int getMinXindex()

    • getMinYindex

      public int getMinYindex()

    • getLLXcoord

      public double getLLXcoord()

    • getLLYcoord

      public double getLLYcoord()