Matlab Smap scripts added

matlab/PSTtoUTC.m

@@ -0,0 +1,4 @@
+function timearray = PSTtoUTC(timearray)
+% Take PST time in Matlab to UTC time in Java.
+
+timearray = (timearray +1/24*8 - datenum(1970,1,1))*86400*1000;

matlab/README.md

@@ -0,0 +1,31 @@
+How to set up MatlabSmap.
+
+(1) Unzip MatlabSmap.zip folder and extract from the java folder:
+JavaSmap_0.1.jar
+
+and from the java/lib folder:
+javax.json-1.0-b06.jar
+
+(2) Add jar paths to Matlab java path.
+
+(Option 1) Add dynamically. For example, include in your m-file the following code:
+javaaddpath('/Users/skoehler/Documents/SDB_MPC/smap/Matlab/JavaSmap_0.1.jar')
+javaaddpath('/Users/skoehler/Documents/SDB_MPC/smap/java/JavaSmap/lib/javax.json-1.0-b06.jar')
+javaaddpath('/Users/skoehler/Documents/SDB_MPC/smap/java/JavaSmap/lib/json-simple-1.1.1.jar')
+
+(Option 2) To add statically, find and edit the following file to include those three jar paths.
+$MATLAB\toolbox\local\classpath.txt
+
+For more information, see: http://www.mathworks.com/matlabcentral/answers/96993-how-can-i-use-a-java-class-from-a-jar-file-in-matlab
+
+Check java path by typing:
+
+    >> javaclasspath
+
+(3) Download JSONLab. Add to Matlab path (e.g. use Set Path button or addpath())
+http://www.mathworks.com/matlabcentral/fileexchange/33381-jsonlab--a-toolbox-to-encode-decode-json-files-in-matlab-octave
+
+For a good review of using JSON in Matlab, see:
+http://undocumentedmatlab.com/blog/json-matlab-integration
+
+

matlab/RunMatlabSmap.m

@@ -0,0 +1,54 @@
+%% RunMatlabSmap.m
+% Use JavaSmap to collect data from sMap.
+
+close all
+clear all
+clear java
+
+disp('Please verify that you set the correct paths in MatlabSmap.m at line 11, 15, 16 and 17')
+
+% jsonlab dynamic link if not set statically:
+% addpath('C:\Users\Robin\Documents\MATLAB\DownloadedFun\JsonLab\jsonlab') 
+% If commented, check the following paths are statically added to
+% classpath.txt. Otherwise, uncomment and dynamically add jars to Java
+% path. Check path with javaclasspath.
+% javaaddpath('C:\Users\Robin\Desktop\java\JavaSmap_0.1.jar')
+% javaaddpath('C:\Users\Robin\Desktop\java\lib\javax.json-1.0-b06.jar')
+% javaaddpath('C:\Users\Robin\Desktop\java\lib\json-simple-1.1.1.jar')
+%javaclasspath
+
+%% Query Set Up
+archiverUrl = 'http://new.openbms.org/backend/api/query';
+js = JavaSmap(archiverUrl);
+uuid_list = java.util.ArrayList;
+
+%% Query Time
+% % Option 1: choose a time frame that ends at the current time
+% Helpful units in Java time
+one_minute = 1000*60;
+one_hour = one_minute*60;
+one_day = 24*one_hour;
+one_week = 7*one_day;
+% endtime = java.lang.System.currentTimeMillis();
+% start = endtime - one_day;
+
+% Option 2: Choose specific dates
+start = PSTtoUTC(datenum(2014,12,3,0,0,0));
+endtime = PSTtoUTC(datenum(2014,12,4,0,0,0));
+
+%% Specify your uuid here (you can find the uuid at http://new.openbms.org/plot/)
+my_uuid = '395005af-a42c-587f-9c46-860f3061ef0d';
+uuid_list.add(my_uuid);
+result = js.data_uuid(uuid_list, start, endtime, int64(100000), int64(size(uuid_list)));
+
+%% Postprocess
+java.lang.System.out.println(result)
+data = loadjson(char(result.toString()));
+timestamp = data{1,1}.Readings(:,1);
+% Convert from Java (UNIX) time to Matlab time, and from UTC to PST
+timestamp = timestamp/86400/1000 + datenum(1970,1,1) - 1/24*8;
+datastamp = data{1}.Readings(:,2);
+
+%% Plot
+plot(timestamp,(datastamp-32)*5/9)
+datetick('x')

matlab/UTCtoPST.m

@@ -0,0 +1,4 @@
+function timearray = UTCtoPST(timearray)
+% Take UTC time from Java and turns into PST time in Matlab.
+
+timearray = timearray/86400/1000 + datenum(1970,1,1) - 1/24*8;