output_feature.setGeometry(QgsGeometry.fromPoint(point)) writer.addFeature(output_feature) progress.setPercentage(int(current * total))delwriter 开发者ID:sbrunner,项目名称:QGIS,代码行数:34,代码来源:ExtractNodes.py 示例2: processAlgorithm ▲点赞 5▼ defprocessAlgorithm(self, progress):layer = data...
我想实现泛洪填充algorthm...so,当我得到一个point...it的x和y坐标时,它应该从那个点开始泛洪,填充直到它找到一个边界,但它不会填充整个region...say,这是我使用的代码 void setpixel(struct fill fillcolor,int x,int y) { glColor3f(fillcolor.r,fillcolor.g,fillcolor.b); glBegin(GL_POIN...
Once the field has reached a correct straight position, the plot shape file can be drawn by selecting at least four points at the corners of the experiment. The number of columns and rows must be informed. At this point the experimental borders can be eliminated, in the example bellow the ...
I'm using QGIS and I'm triyng to extract raster values around some points that were created from a .csv file. I already could extract the raster values in each point but each point represents an antenna and so I need to extract the raster values around each point, for example, the ma...
NoData values surrounding the masked raster (.tif) after using Extract by Mask (ArcMap) 4 Derive a raster layer with distance to the nearest forest polygon in QGIS Hot Network Questions Is it feasible to create an online platform to effectively teach college-level math (abstract algebra,...
I have the raster map of monthly precipitation of some years (download from CGIAR http://www.cgiar-csi.org/data/uea-cru-ts-v3-10-01-historic-climate-database) and I need the mean values on a specific area (polygonal shapefile). I tried with zonal statistic but I had not results, the...