nongridcontourdataset.html

jfreechart1。0。2的api。

<FONT color="green">147</FONT>            yRange.getLength();<a name="line.147"></a>
<FONT color="green">148</FONT>    <a name="line.148"></a>
<FONT color="green">149</FONT>            // Determine the cell size<a name="line.149"></a>
<FONT color="green">150</FONT>            double dxGrid = xRange.getLength() / (numX - 1);<a name="line.150"></a>
<FONT color="green">151</FONT>            double dyGrid = yRange.getLength() / (numY - 1);<a name="line.151"></a>
<FONT color="green">152</FONT>    <a name="line.152"></a>
<FONT color="green">153</FONT>            // Generate the grid<a name="line.153"></a>
<FONT color="green">154</FONT>            double x = 0.0;<a name="line.154"></a>
<FONT color="green">155</FONT>            for (int i = 0; i &lt; numX; i++) {<a name="line.155"></a>
<FONT color="green">156</FONT>                if (i == 0) {<a name="line.156"></a>
<FONT color="green">157</FONT>                    x = xMin;<a name="line.157"></a>
<FONT color="green">158</FONT>                }<a name="line.158"></a>
<FONT color="green">159</FONT>                else {<a name="line.159"></a>
<FONT color="green">160</FONT>                    x += dxGrid;<a name="line.160"></a>
<FONT color="green">161</FONT>                }<a name="line.161"></a>
<FONT color="green">162</FONT>                double y = 0.0;<a name="line.162"></a>
<FONT color="green">163</FONT>                for (int j = 0; j &lt; numY; j++) {<a name="line.163"></a>
<FONT color="green">164</FONT>                    int k = numY * i + j;<a name="line.164"></a>
<FONT color="green">165</FONT>                    xGrid[k] = x;<a name="line.165"></a>
<FONT color="green">166</FONT>                    if (j == 0) {<a name="line.166"></a>
<FONT color="green">167</FONT>                        y = yMin;<a name="line.167"></a>
<FONT color="green">168</FONT>                    }<a name="line.168"></a>
<FONT color="green">169</FONT>                    else {<a name="line.169"></a>
<FONT color="green">170</FONT>                        y += dyGrid;<a name="line.170"></a>
<FONT color="green">171</FONT>                    }<a name="line.171"></a>
<FONT color="green">172</FONT>                    yGrid[k] = y;<a name="line.172"></a>
<FONT color="green">173</FONT>                }<a name="line.173"></a>
<FONT color="green">174</FONT>            }<a name="line.174"></a>
<FONT color="green">175</FONT>    <a name="line.175"></a>
<FONT color="green">176</FONT>            // Map the nongrid data into the new regular grid<a name="line.176"></a>
<FONT color="green">177</FONT>            for (int kGrid = 0; kGrid &lt; xGrid.length; kGrid++) {<a name="line.177"></a>
<FONT color="green">178</FONT>                double dTotal = 0.0;<a name="line.178"></a>
<FONT color="green">179</FONT>                zGrid[kGrid] = 0.0;<a name="line.179"></a>
<FONT color="green">180</FONT>                for (int k = 0; k &lt; this.xValues.length; k++) {<a name="line.180"></a>
<FONT color="green">181</FONT>                    double xPt = this.xValues[k].doubleValue();<a name="line.181"></a>
<FONT color="green">182</FONT>                    double yPt = this.yValues[k].doubleValue();<a name="line.182"></a>
<FONT color="green">183</FONT>                    double d = distance(xPt, yPt, xGrid[kGrid], yGrid[kGrid]);<a name="line.183"></a>
<FONT color="green">184</FONT>                    if (power != 1) {<a name="line.184"></a>
<FONT color="green">185</FONT>                        d = Math.pow(d, power);<a name="line.185"></a>
<FONT color="green">186</FONT>                    }<a name="line.186"></a>
<FONT color="green">187</FONT>                    d = Math.sqrt(d);<a name="line.187"></a>
<FONT color="green">188</FONT>                    if (d &gt; 0.0) {<a name="line.188"></a>
<FONT color="green">189</FONT>                        d = 1.0 / d;<a name="line.189"></a>
<FONT color="green">190</FONT>                    }<a name="line.190"></a>
<FONT color="green">191</FONT>                    else { // if d is real small set the inverse to a large number <a name="line.191"></a>
<FONT color="green">192</FONT>                           // to avoid INF<a name="line.192"></a>
<FONT color="green">193</FONT>                        d = 1.e20;<a name="line.193"></a>
<FONT color="green">194</FONT>                    }<a name="line.194"></a>
<FONT color="green">195</FONT>                    if (this.zValues[k] != null) {<a name="line.195"></a>
<FONT color="green">196</FONT>                        // scale by the inverse of distance^power<a name="line.196"></a>
<FONT color="green">197</FONT>                        zGrid[kGrid] += this.zValues[k].doubleValue() * d; <a name="line.197"></a>
<FONT color="green">198</FONT>                    }<a name="line.198"></a>
<FONT color="green">199</FONT>                    dTotal += d;<a name="line.199"></a>
<FONT color="green">200</FONT>                }<a name="line.200"></a>
<FONT color="green">201</FONT>                zGrid[kGrid] = zGrid[kGrid] / dTotal;  //remove distance of the sum<a name="line.201"></a>
<FONT color="green">202</FONT>            }<a name="line.202"></a>
<FONT color="green">203</FONT>    <a name="line.203"></a>
<FONT color="green">204</FONT>            //initalize xValues, yValues, and zValues arrays.<a name="line.204"></a>
<FONT color="green">205</FONT>            initialize(<a name="line.205"></a>
<FONT color="green">206</FONT>                formObjectArray(xGrid), formObjectArray(yGrid), <a name="line.206"></a>
<FONT color="green">207</FONT>                formObjectArray(zGrid)<a name="line.207"></a>
<FONT color="green">208</FONT>            );<a name="line.208"></a>
<FONT color="green">209</FONT>    <a name="line.209"></a>
<FONT color="green">210</FONT>        }<a name="line.210"></a>
<FONT color="green">211</FONT>    <a name="line.211"></a>
<FONT color="green">212</FONT>        /**<a name="line.212"></a>
<FONT color="green">213</FONT>         * Calculates the distance between two points.<a name="line.213"></a>
<FONT color="green">214</FONT>         * <a name="line.214"></a>
<FONT color="green">215</FONT>         * @param xDataPt  the x coordinate.<a name="line.215"></a>
<FONT color="green">216</FONT>         * @param yDataPt  the y coordinate.<a name="line.216"></a>
<FONT color="green">217</FONT>         * @param xGrdPt  the x grid coordinate.<a name="line.217"></a>
<FONT color="green">218</FONT>         * @param yGrdPt  the y grid coordinate.<a name="line.218"></a>
<FONT color="green">219</FONT>         * <a name="line.219"></a>
<FONT color="green">220</FONT>         * @return The distance between two points.<a name="line.220"></a>
<FONT color="green">221</FONT>         */<a name="line.221"></a>
<FONT color="green">222</FONT>        protected double distance(double xDataPt, <a name="line.222"></a>
<FONT color="green">223</FONT>                                  double yDataPt, <a name="line.223"></a>
<FONT color="green">224</FONT>                                  double xGrdPt, <a name="line.224"></a>
<FONT color="green">225</FONT>                                  double yGrdPt) {<a name="line.225"></a>
<FONT color="green">226</FONT>            double dx = xDataPt - xGrdPt;<a name="line.226"></a>
<FONT color="green">227</FONT>            double dy = yDataPt - yGrdPt;<a name="line.227"></a>
<FONT color="green">228</FONT>            return Math.sqrt(dx * dx + dy * dy);<a name="line.228"></a>
<FONT color="green">229</FONT>        }<a name="line.229"></a>
<FONT color="green">230</FONT>    <a name="line.230"></a>
<FONT color="green">231</FONT>    }<a name="line.231"></a>




























































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