-
-
Notifications
You must be signed in to change notification settings - Fork 3k
/
qgsinterpolationdialog.cpp
586 lines (504 loc) · 16.6 KB
/
qgsinterpolationdialog.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
/***************************************************************************
qgsinterpolationdialog.cpp
--------------------------
begin : Marco 10, 2008
copyright : (C) 2008 by Marco Hugentobler
email : marco dot hugentobler at karto dot baug dot ethz dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsinterpolationdialog.h"
#include "qgsinterpolatordialog.h"
#include "qgsfield.h"
#include "qgsgridfilewriter.h"
#include "qgsidwinterpolatordialog.h"
#include "qgstininterpolatordialog.h"
#include "qgsmapcanvas.h"
#include "qgsmaplayerregistry.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorlayer.h"
#include <QComboBox>
#include <QFileDialog>
#include <QMessageBox>
#include <QSettings>
QgsInterpolationDialog::QgsInterpolationDialog( QWidget* parent, QgisInterface* iface ): QDialog( parent ), mIface( iface ), mInterpolatorDialog( 0 )
{
setupUi( this );
//enter available layers into the combo box
QMap<QString, QgsMapLayer*> mapLayers = QgsMapLayerRegistry::instance()->mapLayers();
QMap<QString, QgsMapLayer*>::iterator layer_it = mapLayers.begin();
for ( ; layer_it != mapLayers.end(); ++layer_it )
{
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer *>( layer_it.value() );
if ( vl )
{
mInputLayerComboBox->insertItem( 0, vl->name() );
}
}
//default resolution 300 * 300
mNumberOfColumnsSpinBox->setValue( 300 );
mNumberOfRowsSpinBox->setValue( 300 );
//only inverse distance weighting available for now
mInterpolationMethodComboBox->insertItem( 0, tr( "Triangular interpolation (TIN)" ) );
mInterpolationMethodComboBox->insertItem( 1, tr( "Inverse Distance Weighting (IDW)" ) );
enableOrDisableOkButton();
}
QgsInterpolationDialog::~QgsInterpolationDialog()
{
}
void QgsInterpolationDialog::enableOrDisableOkButton()
{
bool enabled = true;
//no input data
if ( mLayersTreeWidget->topLevelItemCount() < 1 )
{
enabled = false;
}
else
{
QString fileName = mOutputFileLineEdit->text();
QFileInfo theFileInfo( fileName );
if ( fileName.isEmpty() || !theFileInfo.dir().exists() )
{
enabled = false;
}
}
buttonBox->button( QDialogButtonBox::Ok )->setEnabled( enabled );
}
void QgsInterpolationDialog::on_buttonBox_accepted()
{
if ( !mInterpolatorDialog )
{
return;
}
QgsRectangle outputBBox = currentBoundingBox();
if ( outputBBox.isEmpty() )
{
return;
}
//warn the user if there isn't any input layer
if ( mLayersTreeWidget->topLevelItemCount() < 1 )
{
QMessageBox::information( 0, tr( "No input data for interpolation" ), tr( "Please add one or more input layers" ) );
return;
}
//read file name
QString fileName = mOutputFileLineEdit->text();
QFileInfo theFileInfo( fileName );
if ( fileName.isEmpty() || !theFileInfo.dir().exists() )
{
QMessageBox::information( 0, tr( "Output file name invalid" ), tr( "Please enter a valid output file name" ) );
return;
}
//add .asc suffix if the user did not provider it already
QString suffix = theFileInfo.suffix();
if ( suffix.isEmpty() )
{
fileName.append( ".asc" );
}
int nLayers = mLayersTreeWidget->topLevelItemCount();
QList< QgsInterpolator::LayerData > inputLayerList;
for ( int i = 0; i < nLayers; ++i )
{
QString layerName = mLayersTreeWidget->topLevelItem( i )->text( 0 );
QgsVectorLayer* theVectorLayer = vectorLayerFromName( layerName );
if ( !theVectorLayer )
{
continue;
}
QgsVectorDataProvider* theProvider = theVectorLayer->dataProvider();
if ( !theProvider )
{
continue;
}
QgsInterpolator::LayerData currentLayerData;
currentLayerData.vectorLayer = theVectorLayer;
QString interpolationAttString = mLayersTreeWidget->topLevelItem( i )->text( 1 );
if ( interpolationAttString == "Z_COORD" )
{
currentLayerData.zCoordInterpolation = true;
currentLayerData.interpolationAttribute = -1;
}
else
{
currentLayerData.zCoordInterpolation = false;
int attributeIndex = theProvider->fieldNameIndex( interpolationAttString );
currentLayerData.interpolationAttribute = attributeIndex;
}
//type (point/structure line/ breakline)
QComboBox* itemCombo = qobject_cast<QComboBox *>( mLayersTreeWidget->itemWidget( mLayersTreeWidget->topLevelItem( i ), 2 ) );
if ( itemCombo )
{
QString typeString = itemCombo->currentText();
if ( typeString == tr( "Break lines" ) )
{
currentLayerData.mInputType = QgsInterpolator::BREAK_LINES;
}
else if ( typeString == tr( "Structure lines" ) )
{
currentLayerData.mInputType = QgsInterpolator::STRUCTURE_LINES;
}
else //Points
{
currentLayerData.mInputType = QgsInterpolator::POINTS;
}
}
else
{
currentLayerData.mInputType = QgsInterpolator::POINTS;
}
inputLayerList.push_back( currentLayerData );
}
mInterpolatorDialog->setInputData( inputLayerList );
QgsInterpolator* theInterpolator = mInterpolatorDialog->createInterpolator();
if ( !theInterpolator )
{
return;
}
//create grid file writer
QgsGridFileWriter theWriter( theInterpolator, fileName, outputBBox, mNumberOfColumnsSpinBox->value(), \
mNumberOfRowsSpinBox->value(), mCellsizeXSpinBox->value(), mCellSizeYSpinBox->value() );
if ( theWriter.writeFile( true ) == 0 )
{
mIface->addRasterLayer( fileName, QFileInfo( fileName ).baseName() );
accept();
}
delete theInterpolator;
}
void QgsInterpolationDialog::on_mInputLayerComboBox_currentIndexChanged( const QString& text )
{
Q_UNUSED( text );
mInterpolationAttributeComboBox->clear();
mUseZCoordCheckBox->setEnabled( false );
//get current vector layer
QString currentComboText = mInputLayerComboBox->currentText();
QgsVectorLayer* theVectorLayer = vectorLayerFromName( currentComboText );
if ( !theVectorLayer )
{
return;
}
QgsVectorDataProvider* provider = theVectorLayer->dataProvider();
if ( !provider )
{
return;
}
//find out if the layer has 25D type
QGis::WkbType geomType = provider->geometryType();
if ( geomType == QGis::WKBPoint25D ||
geomType == QGis::WKBLineString25D ||
geomType == QGis::WKBPolygon25D ||
geomType == QGis::WKBMultiPoint25D ||
geomType == QGis::WKBMultiLineString25D ||
geomType == QGis::WKBMultiPolygon25D )
{
mUseZCoordCheckBox->setEnabled( true );
}
//insert numeric attributes of layer into mInterpolationAttributesComboBox
const QgsFieldMap& fields = provider->fields();
QgsFieldMap::const_iterator field_it = fields.constBegin();
for ( ; field_it != fields.constEnd(); ++field_it )
{
QgsField currentField = field_it.value();
QVariant::Type currentType = currentField.type();
if ( currentType == QVariant::Int || currentType == QVariant::Double )
{
mInterpolationAttributeComboBox->insertItem( 0, currentField.name() );
}
}
}
void QgsInterpolationDialog::on_mAddPushButton_clicked()
{
//read active layer in mInputLayerComboBox
QString inputLayer = mInputLayerComboBox->currentText();
//read attribute / z-coordinate interpolation
QString interpolationAttribute;
if ( mUseZCoordCheckBox->checkState() == Qt::Checked )
{
interpolationAttribute = "Z_COORD";
}
else
{
interpolationAttribute = mInterpolationAttributeComboBox->currentText();
}
QTreeWidgetItem* newLayerItem = new QTreeWidgetItem();
newLayerItem->setText( 0, inputLayer );
newLayerItem->setText( 1, interpolationAttribute );
mLayersTreeWidget->addTopLevelItem( newLayerItem );
QComboBox* typeComboBox = new QComboBox();
typeComboBox->addItem( tr( "Points" ) );
typeComboBox->addItem( tr( "Structure lines" ) );
typeComboBox->addItem( tr( "Break lines" ) );
typeComboBox->setCurrentIndex( 0 );
mLayersTreeWidget->setItemWidget( newLayerItem, 2, typeComboBox );
//keep bounding box up to date
setLayersBoundingBox();
enableOrDisableOkButton();
}
void QgsInterpolationDialog::on_mRemovePushButton_clicked()
{
QTreeWidgetItem* currentItem = mLayersTreeWidget->currentItem();
if ( !currentItem )
{
return;
}
delete currentItem;
enableOrDisableOkButton();
}
void QgsInterpolationDialog::on_mOutputFileButton_clicked()
{
//get last output file dir
QSettings s;
QString lastOutputDir = s.value( "/Interpolation/lastOutputDir", "" ).toString();
QString rasterFileName = QFileDialog::getSaveFileName( 0, tr( "Save interpolated raster as..." ), lastOutputDir );
if ( !rasterFileName.isEmpty() )
{
mOutputFileLineEdit->setText( rasterFileName );
QFileInfo rasterFileInfo( rasterFileName );
QDir fileDir = rasterFileInfo.absoluteDir();
if ( fileDir.exists() )
{
s.setValue( "/Interpolation/lastOutputDir", rasterFileInfo.absolutePath() );
}
}
enableOrDisableOkButton();
}
void QgsInterpolationDialog::on_mOutputFileLineEdit_textChanged()
{
if ( mOutputFileLineEdit->text().endsWith( ".asc" ) )
{
enableOrDisableOkButton();
}
}
void QgsInterpolationDialog::on_mConfigureInterpolationButton_clicked()
{
if ( mInterpolatorDialog )
{
mInterpolatorDialog->exec();
}
}
QgsVectorLayer* QgsInterpolationDialog::vectorLayerFromName( const QString& name )
{
QMap<QString, QgsMapLayer*> mapLayers = QgsMapLayerRegistry::instance()->mapLayers();
QMap<QString, QgsMapLayer*>::iterator layer_it = mapLayers.begin();
for ( ; layer_it != mapLayers.end(); ++layer_it )
{
if ( layer_it.value()->name() == name )
{
return qobject_cast<QgsVectorLayer *>( layer_it.value() );
break;
}
}
return 0;
}
void QgsInterpolationDialog::on_mInterpolationMethodComboBox_currentIndexChanged( const QString &text )
{
delete mInterpolatorDialog;
if ( text == tr( "Inverse Distance Weighting (IDW)" ) )
{
mInterpolatorDialog = new QgsIDWInterpolatorDialog( 0, mIface );
}
else if ( text == tr( "Triangular interpolation (TIN)" ) )
{
mInterpolatorDialog = new QgsTINInterpolatorDialog( 0, mIface );
}
}
void QgsInterpolationDialog::on_mNumberOfColumnsSpinBox_valueChanged( int value )
{
Q_UNUSED( value );
setNewCellsizeXOnNColumnsChange();
}
void QgsInterpolationDialog::on_mNumberOfRowsSpinBox_valueChanged( int value )
{
Q_UNUSED( value );
setNewCellsizeYOnNRowschange();
}
void QgsInterpolationDialog::on_mCellsizeXSpinBox_valueChanged( double value )
{
Q_UNUSED( value );
setNColsOnCellsizeXChange();
}
void QgsInterpolationDialog::on_mCellSizeYSpinBox_valueChanged( double value )
{
Q_UNUSED( value );
setNRowsOnCellsizeYChange();
}
void QgsInterpolationDialog::on_mXMinLineEdit_textEdited( const QString& text )
{
Q_UNUSED( text );
setNewCellsizeOnBoundingBoxChange();
}
void QgsInterpolationDialog::on_mXMaxLineEdit_textEdited( const QString& text )
{
Q_UNUSED( text );
setNewCellsizeOnBoundingBoxChange();
}
void QgsInterpolationDialog::on_mYMinLineEdit_textEdited( const QString& text )
{
Q_UNUSED( text );
setNewCellsizeOnBoundingBoxChange();
}
void QgsInterpolationDialog::on_mYMaxLineEdit_textEdited( const QString& text )
{
Q_UNUSED( text );
setNewCellsizeOnBoundingBoxChange();
}
void QgsInterpolationDialog::on_mBBoxToCurrentExtent_clicked()
{
if ( mIface )
{
QgsMapCanvas* canvas = mIface->mapCanvas();
if ( canvas )
{
QgsRectangle extent = canvas->extent();
mXMinLineEdit->setText( QString::number( extent.xMinimum() ) );
mXMaxLineEdit->setText( QString::number( extent.xMaximum() ) );
mYMinLineEdit->setText( QString::number( extent.yMinimum() ) );
mYMaxLineEdit->setText( QString::number( extent.yMaximum() ) );
setNewCellsizeOnBoundingBoxChange();
}
}
}
QgsRectangle QgsInterpolationDialog::boundingBoxOfLayers()
{
int nLayers = mLayersTreeWidget->topLevelItemCount();
QList< QgsInterpolator::LayerData > inputLayerList;
QgsRectangle combinedLayerExtent;
for ( int i = 0; i < nLayers; ++i )
{
QString layerName = mLayersTreeWidget->topLevelItem( i )->text( 0 );
QgsVectorLayer* theVectorLayer = vectorLayerFromName( layerName );
if ( !theVectorLayer )
{
continue;
}
QgsVectorDataProvider* theProvider = theVectorLayer->dataProvider();
if ( !theProvider )
{
continue;
}
//update extent
QgsRectangle currentLayerExtent = theVectorLayer->extent();
if ( combinedLayerExtent.isEmpty() )
{
combinedLayerExtent = currentLayerExtent;
}
else
{
combinedLayerExtent.combineExtentWith( ¤tLayerExtent );
}
}
return combinedLayerExtent;
}
void QgsInterpolationDialog::setLayersBoundingBox()
{
QgsRectangle layersBoundingBox = boundingBoxOfLayers();
mXMinLineEdit->setText( QString::number( layersBoundingBox.xMinimum() ) );
mXMaxLineEdit->setText( QString::number( layersBoundingBox.xMaximum() ) );
mYMinLineEdit->setText( QString::number( layersBoundingBox.yMinimum() ) );
mYMaxLineEdit->setText( QString::number( layersBoundingBox.yMaximum() ) );
setNewCellsizeOnBoundingBoxChange();
}
void QgsInterpolationDialog::setNewCellsizeOnBoundingBoxChange()
{
QgsRectangle currentBbox = currentBoundingBox();
if ( currentBbox.isEmpty() )
{
return;
}
if ( currentBbox.width() > 0 && mNumberOfColumnsSpinBox->value() > 0 )
{
mCellsizeXSpinBox->blockSignals( true );
mCellsizeXSpinBox->setValue( currentBbox.width() / mNumberOfColumnsSpinBox->value() );
mCellsizeXSpinBox->blockSignals( false );
}
if ( currentBbox.height() > 0 && mNumberOfRowsSpinBox->value() > 0 )
{
mCellSizeYSpinBox->blockSignals( true );
mCellSizeYSpinBox->setValue( currentBbox.height() / mNumberOfRowsSpinBox->value() );
mCellSizeYSpinBox->blockSignals( false );
}
}
void QgsInterpolationDialog::setNewCellsizeXOnNColumnsChange()
{
QgsRectangle currentBBox = currentBoundingBox();
if ( !currentBBox.isEmpty() && mNumberOfColumnsSpinBox->value() > 0 )
{
mCellsizeXSpinBox->blockSignals( true );
mCellsizeXSpinBox->setValue( currentBBox.width() / mNumberOfColumnsSpinBox->value() );
mCellsizeXSpinBox->blockSignals( false );
}
}
void QgsInterpolationDialog::setNewCellsizeYOnNRowschange()
{
QgsRectangle currentBBox = currentBoundingBox();
if ( !currentBBox.isEmpty() && mNumberOfRowsSpinBox->value() > 0 )
{
mCellSizeYSpinBox->blockSignals( true );
mCellSizeYSpinBox->setValue( currentBBox.height() / mNumberOfRowsSpinBox->value() );
mCellSizeYSpinBox->blockSignals( false );
}
}
void QgsInterpolationDialog::setNColsOnCellsizeXChange()
{
QgsRectangle currentBBox = currentBoundingBox();
int newSize;
if ( mCellsizeXSpinBox->value() <= 0 )
{
return;
}
if ( currentBBox.width() <= 0 )
{
newSize = 0;
}
else
{
newSize = ( int )( currentBBox.width() / mCellsizeXSpinBox->value() );
}
mNumberOfColumnsSpinBox->blockSignals( true );
mNumberOfColumnsSpinBox->setValue( newSize );
mNumberOfColumnsSpinBox->blockSignals( false );
}
void QgsInterpolationDialog::setNRowsOnCellsizeYChange()
{
QgsRectangle currentBBox = currentBoundingBox();
int newSize;
if ( mCellSizeYSpinBox->value() <= 0 )
{
return;
}
if ( currentBBox.height() <= 0 )
{
newSize = 0;
}
else
{
newSize = ( int )( currentBBox.height() / mCellSizeYSpinBox->value() );
}
mNumberOfRowsSpinBox->blockSignals( true );
mNumberOfRowsSpinBox->setValue( newSize );
mNumberOfRowsSpinBox->blockSignals( false );
}
QgsRectangle QgsInterpolationDialog::currentBoundingBox()
{
QString xMinString = mXMinLineEdit->text();
QString xMaxString = mXMaxLineEdit->text();
QString yMinString = mYMinLineEdit->text();
QString yMaxString = mYMaxLineEdit->text();
bool xMinOk, xMaxOk, yMinOk, yMaxOk;
double xMin = xMinString.toDouble( &xMinOk );
double xMax = xMaxString.toDouble( &xMaxOk );
double yMin = yMinString.toDouble( &yMinOk );
double yMax = yMaxString.toDouble( &yMaxOk );
if ( !xMinOk || !xMaxOk || !yMinOk || !yMaxOk )
{
QgsRectangle emptyBbox;
return emptyBbox; //error, return empty bounding box
}
return QgsRectangle( xMin, yMin, xMax, yMax );
}