In order to get a chart in the reports taking into account every trackpoint you have to use the BreadCrumb report with some modifications:
1. Install the BreadCrumb report
-Go to SiteAdmin/Plugins click in "Get more Plugins"
-Look for the BreadCrumb plugin and click the install link
2. Create a new DataProvider
-Go to SiteAdmin/Reporting/ManageDataProviders and select New, use BreadCrumb01 as template (should be displayed as Copy of BreadCrumb01).
-Select "value" from the dropdown list and click "Add". Then write a name, select the variable that you are using for temperature from the drop down, select the option "Last" and click the Insert button.
-Remove the default option in the "Select when data should be written" section and add a new "Column value change", select temperature (or the name that you have given to the variable) as the Monitor column.
-Save the DataProvider
3. Change the query for the BreadCrumb report.
-Go to SiteAdmin/Reporting/ManageReports and click the "New" button, use BC1000 BreadCrumb as template. Click Next
-Click the "Query Editor" button and then click on the query link "BreadCrumbDetailed" to display the query.
-Change every reference to the old data provider (BreadCrumb01) for the new data provider (CopyofBreadCrumb01 if you haven´t changed the name)
-Add a new line in the query right after Users.Username, and write the name of your new dataprovider and the temperature variable ending with ',' (CopyofBreadCrumb01.Temperature,)
-Save the query and click "back" to go to the Layout Editor.
4. Replace the Speed value for Temperature and add the chart
-Change the bold title Speed for Temperature
-Change the speed variable [Speed] for your variable, you can right click on the cell and look for it in "Fields" (for example: [Temperature]). You can also right click and select "Unit" to use SIGNAL_TEMPERATURE instead.
-Right click on the last row header colored in grey and select "insert chart above"
-Select the type of chart you want (StepLine or Columns should look fine), and set the values for X and Y axis to [SamplingStart] and [Temperature] respectively. You also can change the units and name the axis.
-Click OK and then Save the report.
5. Activate the report as describe in this link from section 2 onwards:
http://gpsgate.com/blogComment/activate ... _server_30
Note: Other graph types can be selected but data won´t be accurate. For the Columns options there might be some "gaps", that means the temperature value hasn´t changed, the StepLine shouldn´t show any gaps.
Regarding the date/time values in charts they shouldn´t be displayed in UTC. MAke sure you are using a date type and not a string type to display dates in charts.