Hi Stefan,
thanks a lot. I will go and study the code when I will be back home.
Giuseppe
2013/6/27 Stefan Steiniger <sst...@geo.uzh.ch>
> Hi Peppe and other Devs,
>
> I fixed the problem :)
> I send you my last version that seems to write an *.asc file as it is
> supposed to. At least it looks like OJ itself and QGIS are able to read
> it. From my file you can start and adding the stuff you still think is
> necessary. I have made some inline comments.
>
> I think you actually got a bit confused with the whole row and columns
> thing (I switched the loops). And you should have put the "write-ln"
> command after the inner loop is finished, and not in each line.
>
> Also, I realized that when I checked for the noData value, that there
> was something wrong. I found then out, that an OJ-Raster has no NoData
> value property, while Sextante has (however... OJ has a transparency
> setting). This also means, that when reading an ascii file with the
> current reader, then this values was not set. So I implemented that
> property, and will commit my changes in a few minutes.
>
> The default NoDataValue is now Double.NaN.
>
> This value will also get transferred when creating a Sextante Raster
> Image Layer from an image file. However, if a new Sextante Layer is
> created (not based on an existing file), then the default noDataValue is
> -99999.0 (i.e. one digit more than the ESRI default of -9999)
>
> I hope I did not miss out on something, and nothing breaks now when
> working with Sextante. But I don't guess so.
>
> I also attach my ascii test file, that I created from the Wikipedia page.
>
> cheers,
> stefan
>
>
> Am 26.06.13 12:56, schrieb Giuseppe Aruta:
> > Really I don't understand loops in Java
> > ;-)
> >
> >
> > 2013/6/26 Giuseppe Aruta <giuseppe_ar...@yahoo.it
> > <mailto:giuseppe_ar...@yahoo.it>>
> >
> > Hi Stefan,
> > I made some progress, now I am able to save to asc, unfortunately
> > each value of the pixel of the ascii is saved an incredible number
> > equal to rowXcolumn of the original. So my test file of 101 byte
> > becomes a huge file of 2 Gb :-( Surelly I made a misake.
> > Then I moved to Switzerland for job, where actully I am. And didn't
> > carry with me Eclipse, codes, OpenJMP, etc. I will be back home
> > after 5th of July and give a better look (and send the code)
> > regards
> >
> > Peppe
> >
> >
> > 2013/6/26 Stefan Steiniger <sst...@geo.uzh.ch
> > <mailto:sst...@geo.uzh.ch>>
> >
> > Hi Peppe,
> >
> > did you made any progress on that?
> > Or is the code the last version you have?
> >
> > slds,
> > stefan
> >
> > Am 21.06.13 06:05, schrieb Giuseppe Aruta:
> > >
> > > Hi all,
> > > Recently I worked a bit with Sextante/grids and did some
> > specialized
> > > short courses. A student of mine used OpenJUMP/Sextante to do
> > some
> > > analysis. Than he had to convert all the rasters (TIFF
> > format) into ESRI
> > > Ascii grid files (.asc) as he had to use a more specialized
> > software
> > > that was accepting only asc. and surfer raster format.
> > > Of coarse we used gdal for raster transformation.
> > > Well, since Esri ascii file is a very simple text file
> > > (http://en.wikipedia.org/wiki/Esri_grid), in these days (
> > that I have
> > > spare time) I tried to make a plugin "Export raster to Esri
> > Ascii grid
> > > file" for OpenJUMP (that in turn I would like to add to OJ
> > NB). All
> > > raster parameters are easy implemented by RasterImageLayer and
> > > OpenJUMPSextanteRasterLayer.
> > > I had some success and some failures.
> > > I ask your help, as developers.
> > > I added to this mail the code I wrote (coping partially OJ
> raster
> > > classes and from other software like ImageJ) - The foillowing
> > code just
> > > shows the transformation, excluding initialize(), icon(),
> > name(), etc.
> > > This code partially works: the file is saved together with
> > the header of
> > > the raster (see the *black* part of the code, number of
> > colums, rows,
> > > x-ycoordinates of upper left corner, cell size and NODATA),
> > > The red part of code is not working. This part should lists
> > the raster
> > > values for each cell, starting at the upper-left corner,
> > possibly with
> > > decimal values, delimited by space character. I ask you if
> > can give me a
> > > suggestion for this part.
> > > Another part that I would like to implement is the
> > MultienableCheck
> > > (dark *violet *part of the code). This plugin should be
> > activated only
> > > if the raster has only one band (I think this is numbered "0"
> by
> > > OpenJUMPSextanteRasterLayer class). Any suggestion is
> > accepted: a way to
> > > distinguish (within Pirol raster plugin) between grid mono
> > band file and
> > > others would be quite usefull for future plugins
> > > If this plugin is finished I think I will add to OJ NB under
> > > Raster>Tools menu.
> > > regards and thanks
> > >
> > > Peppe
> > >
> > > public class SaveToASCPlugIn extends AbstractPlugIn
> > > {
> > >
> > > protected double[][] data;
> > > private Properties properties = null;
> > > private static String propertiesFile =
> > > LoadSextanteRasterImagePlugIn.getPropertiesFile();
> > > private String lastPath;
> > > NumberFormat cellFormat = null;
> > > public static final String DEFAULT_NODATA = "-9999";
> > >
> > > public boolean execute(PlugInContext context)
> > > throws Exception
> > > {
> > > JFileChooser fc = new JFCWithEnterAction();
> > >
> > > fc.setFileFilter(new FileFilter() {
> > > public boolean accept(File f) {
> > > return (f.isDirectory()) ||
> > > (f.getName().toLowerCase().endsWith(".asc"));
> > > }
> > >
> > > public String getDescription() {
> > > return "Arc/Info ASCII Grid (.asc)";
> > > }
> > > });
> > > this.properties = new Properties();
> > > try {
> > > FileInputStream fis = new
> FileInputStream(propertiesFile);
> > > this.properties.load(fis);
> > > this.lastPath =
> > >
> >
> this.properties.getProperty(LoadSextanteRasterImagePlugIn.KEY_PATH);
> > > fis.close();
> > > }
> > > catch (FileNotFoundException e) {
> > >
> > >
> >
> context.getWorkbenchFrame().warnUser(I18N.get("org.openjump.core.ui.plugin.layer.pirolraster.SaveRasterImageAsImagePlugIn.File-not-found"));
> > > }
> > > catch (IOException e) {
> > >
> context.getWorkbenchFrame().warnUser(GenericNames.ERROR);
> > > }
> > >
> > > if (this.lastPath != null) {
> > > fc.setCurrentDirectory(new File(this.lastPath));
> > > }
> > > fc.setMultiSelectionEnabled(false);
> > >
> > > fc.setDialogTitle(getName());
> > > int returnVal = fc.showSaveDialog(fc);
> > > if (returnVal == 0) {
> > > String ascFileName =
> > fc.getSelectedFile().getAbsolutePath();
> > >
> > > if
> > (!ascFileName.toLowerCase().endsWith(".asc".toLowerCase())) {
> > > ascFileName = ascFileName + ".asc";
> > > }
> > >
> > > File ascFile = new File(ascFileName);
> > >
> > > FileOutputStream ascOut = new
> FileOutputStream(ascFile);
> > >
> > > RasterImageLayer rLayer =
> > > (RasterImageLayer)LayerTools.getSelectedLayerable(context,
> > > RasterImageLayer.class);
> > > OpenJUMPSextanteRasterLayer rstLayer = new
> > > OpenJUMPSextanteRasterLayer();
> > > rstLayer.create(rLayer);
> > >
> > > *PrintStream o = new PrintStream(ascOut);*
> > > *o.println( "ncols " + rLayer.getOrigImageWidth() );
> > > //rstLayer.getNX() );
> > > o.println( "nrows " + rLayer.getOrigImageHeight() );
> > > //rstLayer.getNY() );
> > > o.println( "xllcorner " +
> > rLayer.getEnvelope().getMinX() );
> > > o.println( "yllcorner " +
> > rLayer.getEnvelope().getMinY());
> > > o.println( "cellsize " + rstLayer.getLayerCellSize()
> );
> > > o.println( "NODATA_value " + DEFAULT_NODATA );*
> > >
> > >
> > > GridWrapperNotInterpolated gwrapper = new
> > > GridWrapperNotInterpolated(rstLayer,
> > rstLayer.getLayerGridExtent());
> > >
> > >
> > > int nx = rstLayer.getLayerGridExtent().getNX();
> > > int ny = rstLayer.getLayerGridExtent().getNY();
> > > for (int x = 0; x < nx; x++) {//cols
> > > for (int y = 0; y < ny; y++) {//rows
> > > double value =
> > gwrapper.getCellValueAsFloat(x, y, 0);
> > > StringBuffer b = new StringBuffer();
> > > for( int i = 0; i <
> > rLayer.getOrigImageWidth(); i++ )
> > > {
> > > if(
> > Double.isNaN(rstLayer.getNoDataValue() )
> > > ) b.append( rstLayer.getNoDataValue() );
> > > else if( cellFormat != null )
> b.append(
> > > cellFormat.format( value ));
> > > else b.append( cellFormat.format(
> > value ) );
> > > if( i < rLayer.getOrigImageWidth()
> -1 )
> > > b.append( " " );
> > > }
> > > o.println( b );
> > > }
> > > }
> > > o.close();
> > >
> > > rLayer.setImageFileName(ascFileName);
> > > rLayer.setNeedToKeepImage(false);
> > > }
> > >
> > > return true;
> > > }
> > >
> > >
> > > public void setCellFormat( NumberFormat format )
> > > {
> > > cellFormat = format;
> > > }
> > >
> > >
> > > *public static MultiEnableCheck
> > createEnableCheck(WorkbenchContext
> > > workbenchContext)
> > > {
> > > EnableCheckFactory checkFactory = new EnableCheckFactory(
> > > workbenchContext);
> > > MultiEnableCheck multiEnableCheck = new
> MultiEnableCheck();
> > >
> > >
> > >
> >
> multiEnableCheck.add(checkFactory.createExactlyNLayerablesMustBeSelectedCheck(1,
> > > RasterImageLayer.class));
> > >
> > > return multiEnableCheck;*
> > > }
> > >
> > > }
> > >
> > >
> > >
> >
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