simplehistogramdataset.html

jfreechart1。0。2的api。

<FONT color="green">162</FONT>            // check that the new bin doesn't overlap with any existing bin<a name="line.162"></a>
<FONT color="green">163</FONT>            Iterator iterator = this.bins.iterator();<a name="line.163"></a>
<FONT color="green">164</FONT>            while (iterator.hasNext()) {<a name="line.164"></a>
<FONT color="green">165</FONT>                SimpleHistogramBin existingBin <a name="line.165"></a>
<FONT color="green">166</FONT>                    = (SimpleHistogramBin) iterator.next();<a name="line.166"></a>
<FONT color="green">167</FONT>                if (bin.overlapsWith(existingBin)) {<a name="line.167"></a>
<FONT color="green">168</FONT>                    throw new RuntimeException("Overlapping bin");<a name="line.168"></a>
<FONT color="green">169</FONT>                }<a name="line.169"></a>
<FONT color="green">170</FONT>            }<a name="line.170"></a>
<FONT color="green">171</FONT>            this.bins.add(bin);<a name="line.171"></a>
<FONT color="green">172</FONT>            Collections.sort(this.bins);<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>         * Adds an observation to the dataset (by incrementing the item count for <a name="line.176"></a>
<FONT color="green">177</FONT>         * the appropriate bin).  A runtime exception is thrown if the value does <a name="line.177"></a>
<FONT color="green">178</FONT>         * not fit into any bin.<a name="line.178"></a>
<FONT color="green">179</FONT>         * <a name="line.179"></a>
<FONT color="green">180</FONT>         * @param value  the value.<a name="line.180"></a>
<FONT color="green">181</FONT>         */<a name="line.181"></a>
<FONT color="green">182</FONT>        public void addObservation(double value) {<a name="line.182"></a>
<FONT color="green">183</FONT>            addObservation(value, true);<a name="line.183"></a>
<FONT color="green">184</FONT>        }<a name="line.184"></a>
<FONT color="green">185</FONT>        <a name="line.185"></a>
<FONT color="green">186</FONT>        /**<a name="line.186"></a>
<FONT color="green">187</FONT>         * Adds an observation to the dataset (by incrementing the item count for <a name="line.187"></a>
<FONT color="green">188</FONT>         * the appropriate bin).  A runtime exception is thrown if the value does <a name="line.188"></a>
<FONT color="green">189</FONT>         * not fit into any bin.<a name="line.189"></a>
<FONT color="green">190</FONT>         * <a name="line.190"></a>
<FONT color="green">191</FONT>         * @param value  the value.<a name="line.191"></a>
<FONT color="green">192</FONT>         * @param notify  send {@link DatasetChangeEvent} to listeners?<a name="line.192"></a>
<FONT color="green">193</FONT>         */<a name="line.193"></a>
<FONT color="green">194</FONT>        public void addObservation(double value, boolean notify) {<a name="line.194"></a>
<FONT color="green">195</FONT>            boolean placed = false;<a name="line.195"></a>
<FONT color="green">196</FONT>            Iterator iterator = this.bins.iterator();<a name="line.196"></a>
<FONT color="green">197</FONT>            while (iterator.hasNext() &amp;&amp; !placed) {<a name="line.197"></a>
<FONT color="green">198</FONT>                SimpleHistogramBin bin = (SimpleHistogramBin) iterator.next();<a name="line.198"></a>
<FONT color="green">199</FONT>                if (bin.accepts(value)) {<a name="line.199"></a>
<FONT color="green">200</FONT>                    bin.setItemCount(bin.getItemCount() + 1);<a name="line.200"></a>
<FONT color="green">201</FONT>                    placed = true;<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>            if (!placed) {<a name="line.204"></a>
<FONT color="green">205</FONT>                throw new RuntimeException("No bin.");<a name="line.205"></a>
<FONT color="green">206</FONT>            }<a name="line.206"></a>
<FONT color="green">207</FONT>            if (notify) {<a name="line.207"></a>
<FONT color="green">208</FONT>                notifyListeners(new DatasetChangeEvent(this, this)); <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>         * Adds a set of values to the dataset.<a name="line.213"></a>
<FONT color="green">214</FONT>         * <a name="line.214"></a>
<FONT color="green">215</FONT>         * @param values  the values.<a name="line.215"></a>
<FONT color="green">216</FONT>         */<a name="line.216"></a>
<FONT color="green">217</FONT>        public void addObservations(double[] values) {<a name="line.217"></a>
<FONT color="green">218</FONT>            for (int i = 0; i &lt; values.length; i++) {<a name="line.218"></a>
<FONT color="green">219</FONT>                addObservation(values[i], false);<a name="line.219"></a>
<FONT color="green">220</FONT>            }<a name="line.220"></a>
<FONT color="green">221</FONT>            notifyListeners(new DatasetChangeEvent(this, this));<a name="line.221"></a>
<FONT color="green">222</FONT>        }<a name="line.222"></a>
<FONT color="green">223</FONT>    <a name="line.223"></a>
<FONT color="green">224</FONT>        /**<a name="line.224"></a>
<FONT color="green">225</FONT>         * Returns the x-value for an item within a series.  The x-values may or <a name="line.225"></a>
<FONT color="green">226</FONT>         * may not be returned in ascending order, that is up to the class <a name="line.226"></a>
<FONT color="green">227</FONT>         * implementing the interface.<a name="line.227"></a>
<FONT color="green">228</FONT>         *<a name="line.228"></a>
<FONT color="green">229</FONT>         * @param series  the series index (zero-based).<a name="line.229"></a>
<FONT color="green">230</FONT>         * @param item  the item index (zero-based).<a name="line.230"></a>
<FONT color="green">231</FONT>         *<a name="line.231"></a>
<FONT color="green">232</FONT>         * @return The x-value (never &lt;code&gt;null&lt;/code&gt;).<a name="line.232"></a>
<FONT color="green">233</FONT>         */<a name="line.233"></a>
<FONT color="green">234</FONT>        public Number getX(int series, int item) {<a name="line.234"></a>
<FONT color="green">235</FONT>            return new Double(getXValue(series, item));<a name="line.235"></a>
<FONT color="green">236</FONT>        }<a name="line.236"></a>
<FONT color="green">237</FONT>    <a name="line.237"></a>
<FONT color="green">238</FONT>        /**<a name="line.238"></a>
<FONT color="green">239</FONT>         * Returns the x-value (as a double primitive) for an item within a series.<a name="line.239"></a>
<FONT color="green">240</FONT>         * <a name="line.240"></a>
<FONT color="green">241</FONT>         * @param series  the series index (zero-based).<a name="line.241"></a>
<FONT color="green">242</FONT>         * @param item  the item index (zero-based).<a name="line.242"></a>
<FONT color="green">243</FONT>         * <a name="line.243"></a>
<FONT color="green">244</FONT>         * @return The x-value.<a name="line.244"></a>
<FONT color="green">245</FONT>         */<a name="line.245"></a>
<FONT color="green">246</FONT>        public double getXValue(int series, int item) {<a name="line.246"></a>
<FONT color="green">247</FONT>            SimpleHistogramBin bin = (SimpleHistogramBin) this.bins.get(item);<a name="line.247"></a>
<FONT color="green">248</FONT>            return (bin.getLowerBound() + bin.getUpperBound()) / 2.0;<a name="line.248"></a>
<FONT color="green">249</FONT>        }<a name="line.249"></a>
<FONT color="green">250</FONT>        <a name="line.250"></a>
<FONT color="green">251</FONT>        /**<a name="line.251"></a>
<FONT color="green">252</FONT>         * Returns the y-value for an item within a series.<a name="line.252"></a>
<FONT color="green">253</FONT>         *<a name="line.253"></a>
<FONT color="green">254</FONT>         * @param series  the series index (zero-based).<a name="line.254"></a>
<FONT color="green">255</FONT>         * @param item  the item index (zero-based).<a name="line.255"></a>
<FONT color="green">256</FONT>         *<a name="line.256"></a>
<FONT color="green">257</FONT>         * @return The y-value (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.257"></a>
<FONT color="green">258</FONT>         */<a name="line.258"></a>
<FONT color="green">259</FONT>        public Number getY(int series, int item) {<a name="line.259"></a>
<FONT color="green">260</FONT>            return new Double(getYValue(series, item));<a name="line.260"></a>
<FONT color="green">261</FONT>        }<a name="line.261"></a>
<FONT color="green">262</FONT>    <a name="line.262"></a>
<FONT color="green">263</FONT>        /**<a name="line.263"></a>
<FONT color="green">264</FONT>         * Returns the y-value (as a double primitive) for an item within a series.<a name="line.264"></a>
<FONT color="green">265</FONT>         * <a name="line.265"></a>
<FONT color="green">266</FONT>         * @param series  the series index (zero-based).<a name="line.266"></a>
<FONT color="green">267</FONT>         * @param item  the item index (zero-based).<a name="line.267"></a>
<FONT color="green">268</FONT>         * <a name="line.268"></a>
<FONT color="green">269</FONT>         * @return The y-value.<a name="line.269"></a>
<FONT color="green">270</FONT>         */<a name="line.270"></a>
<FONT color="green">271</FONT>        public double getYValue(int series, int item) {<a name="line.271"></a>
<FONT color="green">272</FONT>            SimpleHistogramBin bin = (SimpleHistogramBin) this.bins.get(item);<a name="line.272"></a>
<FONT color="green">273</FONT>            if (this.adjustForBinSize) {<a name="line.273"></a>
<FONT color="green">274</FONT>                return bin.getItemCount() <a name="line.274"></a>
<FONT color="green">275</FONT>                       / (bin.getUpperBound() - bin.getLowerBound());<a name="line.275"></a>
<FONT color="green">276</FONT>            }<a name="line.276"></a>
<FONT color="green">277</FONT>            else {<a name="line.277"></a>
<FONT color="green">278</FONT>                return bin.getItemCount();<a name="line.278"></a>
<FONT color="green">279</FONT>            }<a name="line.279"></a>
<FONT color="green">280</FONT>        }<a name="line.280"></a>
<FONT color="green">281</FONT>        <a name="line.281"></a>
<FONT color="green">282</FONT>        /**<a name="line.282"></a>
<FONT color="green">283</FONT>         * Returns the starting X value for the specified series and item.<a name="line.283"></a>
<FONT color="green">284</FONT>         *<a name="line.284"></a>
<FONT color="green">285</FONT>         * @param series  the series index (zero-based).<a name="line.285"></a>
<FONT color="green">286</FONT>         * @param item  the item index (zero-based).<a name="line.286"></a>
<FONT color="green">287</FONT>         *<a name="line.287"></a>
<FONT color="green">288</FONT>         * @return The value.<a name="line.288"></a>
<FONT color="green">289</FONT>         */<a name="line.289"></a>
<FONT color="green">290</FONT>        public Number getStartX(int series, int item) {<a name="line.290"></a>
<FONT color="green">291</FONT>            return new Double(getStartXValue(series, item));<a name="line.291"></a>
<FONT color="green">292</FONT>        }<a name="line.292"></a>
<FONT color="green">293</FONT>    <a name="line.293"></a>
<FONT color="green">294</FONT>        /**<a name="line.294"></a>
<FONT color="green">295</FONT>         * Returns the start x-value (as a double primitive) for an item within a <a name="line.295"></a>
<FONT color="green">296</FONT>         * series.<a name="line.296"></a>
<FONT color="green">297</FONT>         * <a name="line.297"></a>
<FONT color="green">298</FONT>         * @param series  the series (zero-based index).<a name="line.298"></a>
<FONT color="green">299</FONT>         * @param item  the item (zero-based index).<a name="line.299"></a>
<FONT color="green">300</FONT>         * <a name="line.300"></a>
<FONT color="green">301</FONT>         * @return The start x-value.<a name="line.301"></a>
<FONT color="green">302</FONT>         */<a name="line.302"></a>
<FONT color="green">303</FONT>        public double getStartXValue(int series, int item) {<a name="line.303"></a>
<FONT color="green">304</FONT>            SimpleHistogramBin bin = (SimpleHistogramBin) this.bins.get(item);<a name="line.304"></a>
<FONT color="green">305</FONT>            return bin.getLowerBound();<a name="line.305"></a>
<FONT color="green">306</FONT>        }<a name="line.306"></a>
<FONT color="green">307</FONT>    <a name="line.307"></a>
<FONT color="green">308</FONT>        /**<a name="line.308"></a>
<FONT color="green">309</FONT>         * Returns the ending X value for the specified series and item.<a name="line.309"></a>
<FONT color="green">310</FONT>         *<a name="line.310"></a>
<FONT color="green">311</FONT>         * @param series  the series index (zero-based).<a name="line.311"></a>
<FONT color="green">312</FONT>         * @param item  the item index (zero-based).<a name="line.312"></a>
<FONT color="green">313</FONT>         *<a name="line.313"></a>
<FONT color="green">314</FONT>         * @return The value.<a name="line.314"></a>
<FONT color="green">315</FONT>         */<a name="line.315"></a>
<FONT color="green">316</FONT>        public Number getEndX(int series, int item) {<a name="line.316"></a>
<FONT color="green">317</FONT>            return new Double(getEndXValue(series, item));<a name="line.317"></a>
<FONT color="green">318</FONT>        }<a name="line.318"></a>
<FONT color="green">319</FONT>    <a name="line.319"></a>
<FONT color="green">320</FONT>        /**<a name="line.320"></a>
<FONT color="green">321</FONT>         * Returns the end x-value (as a double primitive) for an item within a <a name="line.321"></a>
<FONT color="green">322</FONT>         * series.<a name="line.322"></a>
<FONT color="green">323</FONT>         * <a name="line.323"></a>
<FONT color="green">324</FONT>         * @param series  the series index (zero-based).<a name="line.324"></a>
<FONT color="green">325</FONT>         * @param item  the item index (zero-based).<a name="line.325"></a>