dynamictimeseriescollection.html

jfreechart1。0。2的api。

<FONT color="green">145</FONT>             */<a name="line.145"></a>
<FONT color="green">146</FONT>            public ValueSequence(int length) {<a name="line.146"></a>
<FONT color="green">147</FONT>                this.dataPoints = new float[length];<a name="line.147"></a>
<FONT color="green">148</FONT>                for (int i = 0; i &lt; length; i++) {<a name="line.148"></a>
<FONT color="green">149</FONT>                    this.dataPoints[i] = 0.0f;<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>    <a name="line.152"></a>
<FONT color="green">153</FONT>            /**<a name="line.153"></a>
<FONT color="green">154</FONT>             * Enters data into the storage array.<a name="line.154"></a>
<FONT color="green">155</FONT>             *<a name="line.155"></a>
<FONT color="green">156</FONT>             * @param index  the index.<a name="line.156"></a>
<FONT color="green">157</FONT>             * @param value  the value.<a name="line.157"></a>
<FONT color="green">158</FONT>             */<a name="line.158"></a>
<FONT color="green">159</FONT>            public void enterData(int index, float value) {<a name="line.159"></a>
<FONT color="green">160</FONT>                this.dataPoints[index] = value;<a name="line.160"></a>
<FONT color="green">161</FONT>            }<a name="line.161"></a>
<FONT color="green">162</FONT>    <a name="line.162"></a>
<FONT color="green">163</FONT>            /**<a name="line.163"></a>
<FONT color="green">164</FONT>             * Returns a value from the storage array.<a name="line.164"></a>
<FONT color="green">165</FONT>             *<a name="line.165"></a>
<FONT color="green">166</FONT>             * @param index  the index.<a name="line.166"></a>
<FONT color="green">167</FONT>             *<a name="line.167"></a>
<FONT color="green">168</FONT>             * @return The value.<a name="line.168"></a>
<FONT color="green">169</FONT>             */<a name="line.169"></a>
<FONT color="green">170</FONT>            public float getData(int index) {<a name="line.170"></a>
<FONT color="green">171</FONT>                return this.dataPoints[index];<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>    <a name="line.174"></a>
<FONT color="green">175</FONT>        /** An array for storing the objects that represent each series. */<a name="line.175"></a>
<FONT color="green">176</FONT>        protected ValueSequence[] valueHistory;<a name="line.176"></a>
<FONT color="green">177</FONT>    <a name="line.177"></a>
<FONT color="green">178</FONT>        /** A working calendar (to recycle) */<a name="line.178"></a>
<FONT color="green">179</FONT>        protected Calendar workingCalendar;<a name="line.179"></a>
<FONT color="green">180</FONT>    <a name="line.180"></a>
<FONT color="green">181</FONT>        /** <a name="line.181"></a>
<FONT color="green">182</FONT>         * The position within a time period to return as the x-value (START, <a name="line.182"></a>
<FONT color="green">183</FONT>         * MIDDLE or END). <a name="line.183"></a>
<FONT color="green">184</FONT>         */<a name="line.184"></a>
<FONT color="green">185</FONT>        private int position;<a name="line.185"></a>
<FONT color="green">186</FONT>    <a name="line.186"></a>
<FONT color="green">187</FONT>        /**<a name="line.187"></a>
<FONT color="green">188</FONT>         * A flag that indicates that the domain is 'points in time'.  If this flag <a name="line.188"></a>
<FONT color="green">189</FONT>         * is true, only the x-value is used to determine the range of values in <a name="line.189"></a>
<FONT color="green">190</FONT>         * the domain, the start and end x-values are ignored.<a name="line.190"></a>
<FONT color="green">191</FONT>         */<a name="line.191"></a>
<FONT color="green">192</FONT>        private boolean domainIsPointsInTime;<a name="line.192"></a>
<FONT color="green">193</FONT>    <a name="line.193"></a>
<FONT color="green">194</FONT>        /** index for mapping: points to the oldest valid time &amp; data. */<a name="line.194"></a>
<FONT color="green">195</FONT>        private int oldestAt;  // as a class variable, initializes == 0<a name="line.195"></a>
<FONT color="green">196</FONT>    <a name="line.196"></a>
<FONT color="green">197</FONT>        /** Index of the newest data item. */<a name="line.197"></a>
<FONT color="green">198</FONT>        private int newestAt;<a name="line.198"></a>
<FONT color="green">199</FONT>    <a name="line.199"></a>
<FONT color="green">200</FONT>        // cached values used for interface DomainInfo:<a name="line.200"></a>
<FONT color="green">201</FONT>    <a name="line.201"></a>
<FONT color="green">202</FONT>        /** the # of msec by which time advances. */<a name="line.202"></a>
<FONT color="green">203</FONT>        private long deltaTime;<a name="line.203"></a>
<FONT color="green">204</FONT>    <a name="line.204"></a>
<FONT color="green">205</FONT>        /** Cached domain start (for use by DomainInfo). */<a name="line.205"></a>
<FONT color="green">206</FONT>        private Long domainStart;<a name="line.206"></a>
<FONT color="green">207</FONT>    <a name="line.207"></a>
<FONT color="green">208</FONT>        /** Cached domain end (for use by DomainInfo). */<a name="line.208"></a>
<FONT color="green">209</FONT>        private Long domainEnd;<a name="line.209"></a>
<FONT color="green">210</FONT>    <a name="line.210"></a>
<FONT color="green">211</FONT>        /** Cached domain range (for use by DomainInfo). */<a name="line.211"></a>
<FONT color="green">212</FONT>        private Range domainRange;<a name="line.212"></a>
<FONT color="green">213</FONT>    <a name="line.213"></a>
<FONT color="green">214</FONT>        // Cached values used for interface RangeInfo: (note minValue pinned at 0)<a name="line.214"></a>
<FONT color="green">215</FONT>        //   A single set of extrema covers the entire SeriesCollection<a name="line.215"></a>
<FONT color="green">216</FONT>    <a name="line.216"></a>
<FONT color="green">217</FONT>        /** The minimum value. */<a name="line.217"></a>
<FONT color="green">218</FONT>        private Float minValue = new Float(0.0f);<a name="line.218"></a>
<FONT color="green">219</FONT>    <a name="line.219"></a>
<FONT color="green">220</FONT>        /** The maximum value. */<a name="line.220"></a>
<FONT color="green">221</FONT>        private Float maxValue = null;<a name="line.221"></a>
<FONT color="green">222</FONT>    <a name="line.222"></a>
<FONT color="green">223</FONT>        /** The value range. */<a name="line.223"></a>
<FONT color="green">224</FONT>        private Range valueRange;  // autoinit's to null.<a name="line.224"></a>
<FONT color="green">225</FONT>    <a name="line.225"></a>
<FONT color="green">226</FONT>        /**<a name="line.226"></a>
<FONT color="green">227</FONT>         * Constructs a dataset with capacity for N series, tied to default <a name="line.227"></a>
<FONT color="green">228</FONT>         * timezone.<a name="line.228"></a>
<FONT color="green">229</FONT>         *<a name="line.229"></a>
<FONT color="green">230</FONT>         * @param nSeries the number of series to be accommodated.<a name="line.230"></a>
<FONT color="green">231</FONT>         * @param nMoments the number of TimePeriods to be spanned.<a name="line.231"></a>
<FONT color="green">232</FONT>         */<a name="line.232"></a>
<FONT color="green">233</FONT>        public DynamicTimeSeriesCollection(int nSeries, int nMoments) {<a name="line.233"></a>
<FONT color="green">234</FONT>    <a name="line.234"></a>
<FONT color="green">235</FONT>            this(nSeries, nMoments, new Millisecond(), TimeZone.getDefault());<a name="line.235"></a>
<FONT color="green">236</FONT>            this.newestAt = nMoments - 1;<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>    <a name="line.239"></a>
<FONT color="green">240</FONT>        /**<a name="line.240"></a>
<FONT color="green">241</FONT>         * Constructs an empty dataset, tied to a specific timezone.<a name="line.241"></a>
<FONT color="green">242</FONT>         *<a name="line.242"></a>
<FONT color="green">243</FONT>         * @param nSeries the number of series to be accommodated<a name="line.243"></a>
<FONT color="green">244</FONT>         * @param nMoments the number of TimePeriods to be spanned<a name="line.244"></a>
<FONT color="green">245</FONT>         * @param zone the timezone.<a name="line.245"></a>
<FONT color="green">246</FONT>         */<a name="line.246"></a>
<FONT color="green">247</FONT>        public DynamicTimeSeriesCollection(int nSeries, int nMoments, <a name="line.247"></a>
<FONT color="green">248</FONT>                                           TimeZone zone) {<a name="line.248"></a>
<FONT color="green">249</FONT>            this(nSeries, nMoments, new Millisecond(), zone);<a name="line.249"></a>
<FONT color="green">250</FONT>            this.newestAt = nMoments - 1;<a name="line.250"></a>
<FONT color="green">251</FONT>        }<a name="line.251"></a>
<FONT color="green">252</FONT>    <a name="line.252"></a>
<FONT color="green">253</FONT>        /**<a name="line.253"></a>
<FONT color="green">254</FONT>         * Creates a new dataset.<a name="line.254"></a>
<FONT color="green">255</FONT>         *<a name="line.255"></a>
<FONT color="green">256</FONT>         * @param nSeries  the number of series.<a name="line.256"></a>
<FONT color="green">257</FONT>         * @param nMoments  the number of items per series.<a name="line.257"></a>
<FONT color="green">258</FONT>         * @param timeSample  a time period sample.<a name="line.258"></a>
<FONT color="green">259</FONT>         */<a name="line.259"></a>
<FONT color="green">260</FONT>        public DynamicTimeSeriesCollection(int nSeries,<a name="line.260"></a>
<FONT color="green">261</FONT>                                           int nMoments,<a name="line.261"></a>
<FONT color="green">262</FONT>                                           RegularTimePeriod timeSample) {<a name="line.262"></a>
<FONT color="green">263</FONT>            this(nSeries, nMoments, timeSample, TimeZone.getDefault());<a name="line.263"></a>
<FONT color="green">264</FONT>        }<a name="line.264"></a>
<FONT color="green">265</FONT>    <a name="line.265"></a>
<FONT color="green">266</FONT>        /**<a name="line.266"></a>
<FONT color="green">267</FONT>         * Creates a new dataset.<a name="line.267"></a>
<FONT color="green">268</FONT>         *<a name="line.268"></a>
<FONT color="green">269</FONT>         * @param nSeries  the number of series.<a name="line.269"></a>
<FONT color="green">270</FONT>         * @param nMoments  the number of items per series.<a name="line.270"></a>
<FONT color="green">271</FONT>         * @param timeSample  a time period sample.<a name="line.271"></a>
<FONT color="green">272</FONT>         * @param zone  the time zone.<a name="line.272"></a>
<FONT color="green">273</FONT>         */<a name="line.273"></a>
<FONT color="green">274</FONT>        public DynamicTimeSeriesCollection(int nSeries,<a name="line.274"></a>
<FONT color="green">275</FONT>                                           int nMoments,<a name="line.275"></a>
<FONT color="green">276</FONT>                                           RegularTimePeriod timeSample,<a name="line.276"></a>
<FONT color="green">277</FONT>                                           TimeZone zone) {<a name="line.277"></a>
<FONT color="green">278</FONT>    <a name="line.278"></a>
<FONT color="green">279</FONT>            // the first initialization must precede creation of the ValueSet array:<a name="line.279"></a>
<FONT color="green">280</FONT>            this.maximumItemCount = nMoments;  // establishes length of each array<a name="line.280"></a>
<FONT color="green">281</FONT>            this.historyCount = nMoments;<a name="line.281"></a>
<FONT color="green">282</FONT>            this.seriesKeys = new Comparable[nSeries];<a name="line.282"></a>
<FONT color="green">283</FONT>            // initialize the members of "seriesNames" array so they won't be null:<a name="line.283"></a>
<FONT color="green">284</FONT>            for (int i = 0; i &lt; nSeries; i++) {<a name="line.284"></a>
<FONT color="green">285</FONT>                this.seriesKeys[i] = "";<a name="line.285"></a>
<FONT color="green">286</FONT>            }<a name="line.286"></a>
<FONT color="green">287</FONT>            this.newestAt = nMoments - 1;<a name="line.287"></a>
<FONT color="green">288</FONT>            this.valueHistory = new ValueSequence[nSeries];<a name="line.288"></a>
<FONT color="green">289</FONT>            this.timePeriodClass = timeSample.getClass();<a name="line.289"></a>
<FONT color="green">290</FONT>    <a name="line.290"></a>
<FONT color="green">291</FONT>            /// Expand the following for all defined TimePeriods:<a name="line.291"></a>