First Continuous Variables Analysis
Select File | Open menu command:
![../_images/file_open.png](../_images/file_open.png)
Select TestDataFile5.nex file and click OK in the Open dialog. NeuroExplorer will load the test data file.
Open Analyses of Continuous Data folder by clicking the > icon at the top of the Analyses panel:
![../_images/cont_group_open.png](../_images/cont_group_open.png)
Select analysis type by clicking the Power Spectra for Continuous line in the Analyses panel:
![../_images/cont_spectra_analysis.png](../_images/cont_spectra_analysis.png)
NeuroExplorer will show the following message box:
![../_images/no_compat_vars.png](../_images/no_compat_vars.png)
Close the message box. NeuroExplorer will open Analysis Properties dialog. Click on Selected Variables tab:
![../_images/cont_spectra_pars.png](../_images/cont_spectra_pars.png)
Select the continuous variables that you want to be analyzed in the left variables list (use Ctrl+Mouse_Click to select multiple variables) and press Add Selected > button:
![../_images/cont_sel_vars.png](../_images/cont_sel_vars.png)
Press OK in the Analysis Properties dialog
![../_images/cont_ok.png](../_images/cont_ok.png)
NeuroExplorer will calculate the spectra of selected continuous variables and will open a new window with graphical analysis results:
![../_images/cont_spectra.png](../_images/cont_spectra.png)
To zoom in the low frequency values of the spectra, double click inside one of the graphs. NeuroExplorer will open Analysis Properties dialog.
Change two analysis parameters in the dialog: set Number of Frequency Values to 4096, change Display Frequency To to 200 and press OK:
![../_images/cont_200hz.png](../_images/cont_200hz.png)
NeuroExplorer will show results of the analysis with the new parameters:
![../_images/cont_200hz_graphs.png](../_images/cont_200hz_graphs.png)