Ejemplos de G_insert_c_null_values en C++ (Cpp)

Ejemplo n.º 1

Archivo: raster.c Proyecto: imincik/pkg-grass

int output_raster(int fd)
{
    int i;

    for (i = 0; i < page.rows; i++, at_row++) {
	G_percent(i, page.rows, 2);
	switch (format) {
	case USE_CELL:
	    cell = raster.cell[i];

	    /* insert the NULL values */
	    G_insert_c_null_values(cell, null_flags[i], page.cols);
	    if (G_put_c_raster_row(fd, cell) < 0)
		return -1;
	    break;
	case USE_DCELL:
	    dcell = raster.dcell[i];

	    /* insert the NULL values */
	    G_insert_d_null_values(dcell, null_flags[i], page.cols);
	    if (G_put_d_raster_row(fd, dcell) < 0)
		return -1;
	    break;
	}
    }
    G_percent(1, 1, 1);
    
    return configure_plot();
}

Ejemplo n.º 2

/* NULL cell handling added by Benjamin Ducke, May 2004 */
void Close_segmented_outfile (char* map_name, int map_fd,
			             char* seg_name, int seg_fd, SEGMENT* seg, 
                         CELL* cell_buf, int terse,
                         SEGMENT* elevation_seg, RASTER_MAP_TYPE data_type, int make_nulls)
{
  unsigned long row, nrows, col, ncols;
  void *value = NULL;
  char *null_flags;
  /* the following are used to store different raster map types */
  CELL c_value;
  FCELL f_value;
  DCELL d_value;  	

	
  /* Find number of rows and columns in elevation map */
  nrows = G_window_rows();
  ncols = G_window_cols();
	
  /* allocate memory for a NULL data row */	
  null_flags = G_calloc ((unsigned) ncols, sizeof (char));
    
  /* Write pending updates by segment_put() to output map */
  segment_flush(seg);
  
  if (!terse) {	
    fprintf (stdout, "\nWriting raster map '%s': \n", map_name);	
  }
	
  /* Convert output submatrices to full cell overlay */
  for(row=0; row< nrows; row++) {
    segment_get_row(seg, cell_buf, (signed) row);
	/* check for NULL values in the corresponding row of the */
	/* elevation input file. If there are any, set the CELLs */
	/* in the output file to NULL, as well */
	
	/* initialize null data row */
	for (col=0; col<ncols; col++) {
		null_flags[col] = 0;
	}
	
	/* convert all -1 cells to NULL, if user wants it so */
    if ( make_nulls == 1 ) {
	    for (col=0; col<ncols; col++) {
		   if ( cell_buf[col] == -1 ) {
		     null_flags[col] = 1;
		   }
		}
	}
	
	/* update NULL flags in row */
    for (col=0; col<ncols; col++) {
		if ( data_type == CELL_TYPE ) {
		    value = (CELL*) &c_value;
		}		  
		if ( data_type == FCELL_TYPE ) {
		    value = (FCELL*) &f_value;
		}		  
		if ( data_type == DCELL_TYPE ) {
		    value = (DCELL*) &d_value;
		}
		
        segment_get (elevation_seg, value, (signed) row, (signed) col);
		
		/* check for NULL value and record in null_flags row */
		if ( data_type == CELL_TYPE ) {
		    if (G_is_c_null_value (&c_value) ) {
			  null_flags[col] = 1; /* signal NULL value in null_flags row */
			}			
		}		  
		if ( data_type == FCELL_TYPE ) {
		    if (G_is_f_null_value (&f_value) ) {
			  null_flags[col] = 1; /* signal NULL value in null_flags row */
			}
		}		  
		if ( data_type == DCELL_TYPE ) {
		    if (G_is_d_null_value (&d_value) ) {
			  null_flags[col] = 1; /* signal NULL value in null_flags row */
			}						
		}
	}
    /* set all NULL cells according to null_flags row */
	G_insert_c_null_values (cell_buf, null_flags, (signed) ncols);
	
	/* now, write this row to disk */  
    if(G_put_raster_row (map_fd, cell_buf, CELL_TYPE) < 0) {
	  G_fatal_error ("Failed to convert output submatrices ");	  
	}
	
	/* progress display */
	if (! terse) {
		G_percent ((signed) row, (signed) nrows-1,2);
	}	
  }
  
  G_free (null_flags);
  
/* Close files */
  segment_release (seg);
  close (seg_fd);
  unlink (seg_name);
  G_close_cell (map_fd);
}