📄 defaultxydataset.html
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<FONT color="green">140</FONT> * @throws IllegalArgumentException if <code>series</code> is not in the <a name="line.140"></a><FONT color="green">141</FONT> * specified range.<a name="line.141"></a><FONT color="green">142</FONT> */<a name="line.142"></a><FONT color="green">143</FONT> public int getItemCount(int series) {<a name="line.143"></a><FONT color="green">144</FONT> if ((series < 0) || (series >= getSeriesCount())) {<a name="line.144"></a><FONT color="green">145</FONT> throw new IllegalArgumentException("Series index out of bounds");<a name="line.145"></a><FONT color="green">146</FONT> }<a name="line.146"></a><FONT color="green">147</FONT> double[][] seriesArray = (double[][]) this.seriesList.get(series);<a name="line.147"></a><FONT color="green">148</FONT> return seriesArray[0].length;<a name="line.148"></a><FONT color="green">149</FONT> }<a name="line.149"></a><FONT color="green">150</FONT> <a name="line.150"></a><FONT color="green">151</FONT> /**<a name="line.151"></a><FONT color="green">152</FONT> * Returns the x-value for an item within a series.<a name="line.152"></a><FONT color="green">153</FONT> * <a name="line.153"></a><FONT color="green">154</FONT> * @param series the series index (in the range <code>0</code> to <a name="line.154"></a><FONT color="green">155</FONT> * <code>getSeriesCount() - 1</code>).<a name="line.155"></a><FONT color="green">156</FONT> * @param item the item index (in the range <code>0</code> to <a name="line.156"></a><FONT color="green">157</FONT> * <code>getItemCount(series)</code>).<a name="line.157"></a><FONT color="green">158</FONT> * <a name="line.158"></a><FONT color="green">159</FONT> * @return The x-value.<a name="line.159"></a><FONT color="green">160</FONT> * <a name="line.160"></a><FONT color="green">161</FONT> * @throws ArrayIndexOutOfBounds if <code>series</code> is not within the<a name="line.161"></a><FONT color="green">162</FONT> * specified range.<a name="line.162"></a><FONT color="green">163</FONT> * @throws ArrayIndexOutOfBounds if <code>item</code> is not within the <a name="line.163"></a><FONT color="green">164</FONT> * specified range.<a name="line.164"></a><FONT color="green">165</FONT> * <a name="line.165"></a><FONT color="green">166</FONT> * @see #getX(int, int)<a name="line.166"></a><FONT color="green">167</FONT> */<a name="line.167"></a><FONT color="green">168</FONT> public double getXValue(int series, int item) {<a name="line.168"></a><FONT color="green">169</FONT> double[][] seriesData = (double[][]) this.seriesList.get(series);<a name="line.169"></a><FONT color="green">170</FONT> return seriesData[0][item];<a name="line.170"></a><FONT color="green">171</FONT> }<a name="line.171"></a><FONT color="green">172</FONT> <a name="line.172"></a><FONT color="green">173</FONT> /**<a name="line.173"></a><FONT color="green">174</FONT> * Returns the x-value for an item within a series.<a name="line.174"></a><FONT color="green">175</FONT> * <a name="line.175"></a><FONT color="green">176</FONT> * @param series the series index (in the range <code>0</code> to <a name="line.176"></a><FONT color="green">177</FONT> * <code>getSeriesCount() - 1</code>).<a name="line.177"></a><FONT color="green">178</FONT> * @param item the item index (in the range <code>0</code> to <a name="line.178"></a><FONT color="green">179</FONT> * <code>getItemCount(series)</code>).<a name="line.179"></a><FONT color="green">180</FONT> * <a name="line.180"></a><FONT color="green">181</FONT> * @return The x-value.<a name="line.181"></a><FONT color="green">182</FONT> * <a name="line.182"></a><FONT color="green">183</FONT> * @throws ArrayIndexOutOfBounds if <code>series</code> is not within the<a name="line.183"></a><FONT color="green">184</FONT> * specified range.<a name="line.184"></a><FONT color="green">185</FONT> * @throws ArrayIndexOutOfBounds if <code>item</code> is not within the <a name="line.185"></a><FONT color="green">186</FONT> * specified range.<a name="line.186"></a><FONT color="green">187</FONT> * <a name="line.187"></a><FONT color="green">188</FONT> * @see #getXValue(int, int)<a name="line.188"></a><FONT color="green">189</FONT> */<a name="line.189"></a><FONT color="green">190</FONT> public Number getX(int series, int item) {<a name="line.190"></a><FONT color="green">191</FONT> return new Double(getXValue(series, item));<a name="line.191"></a><FONT color="green">192</FONT> }<a name="line.192"></a><FONT color="green">193</FONT> <a name="line.193"></a><FONT color="green">194</FONT> /**<a name="line.194"></a><FONT color="green">195</FONT> * Returns the y-value for an item within a series.<a name="line.195"></a><FONT color="green">196</FONT> * <a name="line.196"></a><FONT color="green">197</FONT> * @param series the series index (in the range <code>0</code> to <a name="line.197"></a><FONT color="green">198</FONT> * <code>getSeriesCount() - 1</code>).<a name="line.198"></a><FONT color="green">199</FONT> * @param item the item index (in the range <code>0</code> to <a name="line.199"></a><FONT color="green">200</FONT> * <code>getItemCount(series)</code>).<a name="line.200"></a><FONT color="green">201</FONT> * <a name="line.201"></a><FONT color="green">202</FONT> * @return The y-value.<a name="line.202"></a><FONT color="green">203</FONT> * <a name="line.203"></a><FONT color="green">204</FONT> * @throws ArrayIndexOutOfBounds if <code>series</code> is not within the<a name="line.204"></a><FONT color="green">205</FONT> * specified range.<a name="line.205"></a><FONT color="green">206</FONT> * @throws ArrayIndexOutOfBounds if <code>item</code> is not within the <a name="line.206"></a><FONT color="green">207</FONT> * specified range.<a name="line.207"></a><FONT color="green">208</FONT> * <a name="line.208"></a><FONT color="green">209</FONT> * @see #getY(int, int)<a name="line.209"></a><FONT color="green">210</FONT> */<a name="line.210"></a><FONT color="green">211</FONT> public double getYValue(int series, int item) {<a name="line.211"></a><FONT color="green">212</FONT> double[][] seriesData = (double[][]) this.seriesList.get(series);<a name="line.212"></a><FONT color="green">213</FONT> return seriesData[1][item];<a name="line.213"></a><FONT color="green">214</FONT> }<a name="line.214"></a><FONT color="green">215</FONT> <a name="line.215"></a><FONT color="green">216</FONT> /**<a name="line.216"></a><FONT color="green">217</FONT> * Returns the y-value for an item within a series.<a name="line.217"></a><FONT color="green">218</FONT> * <a name="line.218"></a><FONT color="green">219</FONT> * @param series the series index (in the range <code>0</code> to <a name="line.219"></a><FONT color="green">220</FONT> * <code>getSeriesCount() - 1</code>).<a name="line.220"></a><FONT color="green">221</FONT> * @param item the item index (in the range <code>0</code> to <a name="line.221"></a><FONT color="green">222</FONT> * <code>getItemCount(series)</code>).<a name="line.222"></a><FONT color="green">223</FONT> * <a name="line.223"></a><FONT color="green">224</FONT> * @return The y-value.<a name="line.224"></a><FONT color="green">225</FONT> * <a name="line.225"></a><FONT color="green">226</FONT> * @throws ArrayIndexOutOfBounds if <code>series</code> is not within the<a name="line.226"></a><FONT color="green">227</FONT> * specified range.<a name="line.227"></a><FONT color="green">228</FONT> * @throws ArrayIndexOutOfBounds if <code>item</code> is not within the <a name="line.228"></a><FONT color="green">229</FONT> * specified range.<a name="line.229"></a><FONT color="green">230</FONT> * <a name="line.230"></a><FONT color="green">231</FONT> * @see #getX(int, int)<a name="line.231"></a><FONT color="green">232</FONT> */<a name="line.232"></a><FONT color="green">233</FONT> public Number getY(int series, int item) {<a name="line.233"></a><FONT color="green">234</FONT> return new Double(getYValue(series, item));<a name="line.234"></a><FONT color="green">235</FONT> }<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> * Adds a series or if a series with the same key already exists replaces<a name="line.238"></a><FONT color="green">239</FONT> * the data for that series, then sends a {@link DatasetChangeEvent} to <a name="line.239"></a><FONT color="green">240</FONT> * all registered listeners.<a name="line.240"></a><FONT color="green">241</FONT> * <a name="line.241"></a><FONT color="green">242</FONT> * @param seriesKey the series key (<code>null</code> not permitted).<a name="line.242"></a><FONT color="green">243</FONT> * @param data the data (must be an array with length 2, containing two <a name="line.243"></a><FONT color="green">244</FONT> * arrays of equal length, the first containing the x-values and the<a name="line.244"></a><FONT color="green">245</FONT> * second containing the y-values). <a name="line.245"></a><FONT color="green">246</FONT> */<a name="line.246"></a><FONT color="green">247</FONT> public void addSeries(Comparable seriesKey, double[][] data) {<a name="line.247"></a><FONT color="green">248</FONT> if (seriesKey == null) {<a name="line.248"></a><FONT color="green">249</FONT> throw new IllegalArgumentException(<a name="line.249"></a><FONT color="green">250</FONT> "The 'seriesKey' cannot be null.");<a name="line.250"></a><FONT color="green">251</FONT> }<a name="line.251"></a><FONT color="green">252</FONT> if (data == null) {<a name="line.252"></a><FONT color="green">253</FONT> throw new IllegalArgumentException("The 'data' is null.");<a name="line.253"></a><FONT color="green">254</FONT> }<a name="line.254"></a><FONT color="green">255</FONT> if (data.length != 2) {<a name="line.255"></a><FONT color="green">256</FONT> throw new IllegalArgumentException(<a name="line.256"></a><FONT color="green">257</FONT> "The 'data' array must have length == 2.");<a name="line.257"></a><FONT color="green">258</FONT> }<a name="line.258"></a><FONT color="green">259</FONT> if (data[0].length != data[1].length) {<a name="line.259"></a><FONT color="green">260</FONT> throw new IllegalArgumentException(<a name="line.260"></a><FONT color="green">261</FONT> "The 'data' array must contain two arrays with equal length.");<a name="line.261"></a><FONT color="green">262</FONT> }<a name="line.262"></a><FONT color="green">263</FONT> int seriesIndex = indexOf(seriesKey);<a name="line.263"></a><FONT color="green">264</FONT> if (seriesIndex == -1) { // add a new series<a name="line.264"></a><FONT color="green">265</FONT> this.seriesKeys.add(seriesKey);<a name="line.265"></a><FONT color="green">266</FONT> this.seriesList.add(data);<a name="line.266"></a><FONT color="green">267</FONT> }<a name="line.267"></a><FONT color="green">268</FONT> else { // replace an existing series<a name="line.268"></a><FONT color="green">269</FONT> this.seriesList.add(seriesIndex, data);<a name="line.269"></a><FONT color="green">270</FONT> }<a name="line.270"></a><FONT color="green">271</FONT> notifyListeners(new DatasetChangeEvent(this, this));<a name="line.271"></a><FONT color="green">272</FONT> }<a name="line.272"></a><FONT color="green">273</FONT> <a name="line.273"></a><FONT color="green">274</FONT> /**<a name="line.274"></a><FONT color="green">275</FONT> * Removes a series from the dataset, then sends a <a name="line.275"></a><FONT color="green">276</FONT> * {@link DatasetChangeEvent} to all registered listeners.<a name="line.276"></a><FONT color="green">277</FONT> * <a name="line.277"></a><FONT color="green">278</FONT> * @param seriesKey the series key (<code>null</code> not permitted).<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> public void removeSeries(Comparable seriesKey) {<a name="line.281"></a>⌨️ 快捷键说明
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