Geotools矢量网格不显示

1. 确认要素集合中是否存在要素。若没有，将无法显示网格。可以通过以下代码检查： FeatureSource<SimpleFeatureType, SimpleFeature> featureSource = dataStore.getFeatureSource(layerName); SimpleFeatureCollection featureCollection = featureSource.getFeatures(); if (featureCollection.isEmpty()) { // No features available, cannot display grid }

2. 确认是否正确设置矢量网格的计算参数。以下示例代码演示如何使用网格计算器： GridFeatureBuilder gridFeatureBuilder = new GridFeatureBuilder(); GridCoverage2D coverage = Grids.createSquareGrid( new Envelope2D(DefaultGeographicCRS.WGS84, minX, minY, maxX, maxY), gridSize, DefaultGridSampleDimensionType.valueOf(valueType)); GridCoverage2D coverage = gridCalculator.create(coverage);

3. 确认矢量网格是否正确渲染。可以使用以下代码示例： // Define the style for the grid lines Style style = SLD.createLineStyle(Color.BLUE, 1f, "solid");

// Define the vector layer for the grid FeatureLayer layer = new FeatureLayer(featureCollection, style); layer.setTitle("Grid");

// Add the layer to the map mapContent.addLayer(layer); mapPane.repaint();