Ejemplo n.º 1
0
        /// <summary>
        /// Returns MarkerType property for legend.
        /// </summary>
        /// <param name="colorRepo"></param>
        /// <param name="resultDir"></param>
        /// <param name="fi"></param>
        /// <param name="resultName"></param>
        /// <returns></returns>
        private static void ProcessVectorFile(IColorRepository colorRepo, DirectoryInfo resultDir, FileInfo fi, string resultName)
        {
            string localFileName = fi.Name;
            string localResultName = resultName;

            Console.WriteLine(string.Format("Processing {0} into {1}...", localFileName, localResultName));
            StringBuilder bldr = new StringBuilder();

            NetTopologySuite.IO.ShapefileDataReader dataReader = new NetTopologySuite.IO.ShapefileDataReader(fi.FullName, new GeometryFactory());
            NetTopologySuite.Features.FeatureCollection featureCollection = new NetTopologySuite.Features.FeatureCollection();
            List<string> csvHdr = dataReader.DbaseHeader.Fields.Select(a => a.Name).ToList();
            csvHdr.Add(appColorNamspace);
            bldr.AppendLine(string.Join(",", csvHdr)); //write csv file header
            while (dataReader.Read())
            {
                NetTopologySuite.Features.Feature feature = new NetTopologySuite.Features.Feature();
                feature.Geometry = dataReader.Geometry;

                int numFields = dataReader.DbaseHeader.NumFields + 1;
                string[] keys = new string[numFields];
                int colorValueField = -1;
                for (int i = 0; i < numFields - 1; i++)
                {
                    keys[i] = dataReader.DbaseHeader.Fields[i].Name;
                    if (keys[i].Equals(colorRepo.ColorFieldForOutput(localFileName, localResultName)))
                    {
                        colorValueField = i;
                    }
                }

                //add attributes from source attribute table
                feature.Attributes = new AttributesTable();
                List<string> csvLine = new List<string>();
                for (int i = 0; i < numFields - 1; i++)
                {
                    object val = dataReader.GetValue(i);
                    feature.Attributes.AddAttribute(keys[i], val);
                    csvLine.Add(val.ToString());
                }

                if (colorRepo.MapColorsToThisResult(localFileName, localResultName))
                {
                    //mark outline colors in a different attribute than fill colors
                    string colorNs = colorRepo.IsOutlinedNotFilled(localFileName, localResultName) ? appOutlineNamespace : appColorNamspace;
                    keys[numFields - 1] = colorNs;

                    //add additional attribute for color binding
                    string hexClr = colorRepo.SingleColorForFile(localFileName, localResultName); //only path where colorValueField, i.e. ColorMap.clrField can be unpopulated.

                    if (string.IsNullOrEmpty(hexClr) && colorValueField > -1)
                    {
                        if (colorRepo.IsCategoricalMap(localFileName, resultName))
                        {
                            //categorical color map
                             hexClr = colorRepo.ColorsOfValueInFile(localFileName, localResultName, dataReader.GetString(colorValueField)).HexColor;
                        }
                        else
                        {
                            //numerical range color map
                            hexClr = colorRepo.ColorsOfValueInFile(localFileName, localResultName, dataReader.GetDouble(colorValueField)).HexColor;
                        }
                    }

                    if (string.IsNullOrEmpty(hexClr)) // else if (string.IsNullOrEmpty(hexClr) && colorValueField < 0)
                    {
                        throw new NotSupportedException("Cannot color a file with no attributes to bind to and no single-color given.");
                    }
                    csvLine.Add(hexClr);
                    feature.Attributes.AddAttribute(colorNs, hexClr);
                }

                bldr.AppendLine(string.Join(",", csvLine));
                featureCollection.Add(feature);
            }
            GeoJsonWriter wtr = new GeoJsonWriter();
            string layerJson = wtr.Write(featureCollection);

            File.WriteAllText(resultDir.FullName + localResultName, layerJson);
            File.WriteAllText(resultDir.FullName + localResultName.Replace(".json", ".csv"), bldr.ToString());
        }