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UNM_Ameriflux_Data_Viewer.m
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UNM_Ameriflux_Data_Viewer.m
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function UNM_Ameriflux_Data_Viewer( sitecode, year, varargin )
% UNM_Ameriflux_Data_Viewer -- a graphical user interface to view and compare
% gapfilled and non-gapfilled Ameriflux data
%
% Creates new figure window and plots each variable from gapfilled (upper panel)
% and with-gaps (lower panel) Ameriflux file. Prev and Next buttons allow user
% to navigate among all variable present in the files. Gapfilled data points
% are highlighted in the upper panel. Panels are linked so that zooming
% either panel causes both to zoom to the same region.
%
% If prompt_for_files is false (the default) and AFlux_dir is unspecified
% searches for gapfilled and with-gaps Ameriflux files in
% $FLUXROOT/Ameriflux_files.
%
% USAGE
% UNM_Ameriflux_Data_Viewer( sitecode, year )
% UNM_Ameriflux_Data_Viewer( sitecode, year, prompt_for_files )
% UNM_Ameriflux_Data_Viewer( sitecode, year, 'AFlux_dir', 'some/path' )
%
% INPUTS
% sitecode: UNM_sites object; specifies the site to show
% year: four-digit year: specifies the year to show
% PARAMETER-VALUE PAIRS
% prompt_for_files: true|{false}; if true, presents user with selection
% dialog to select gapfilled and with-gaps Ameriflux files from local
% file system. Supersedes AFlux_dir.
% AFlux_dir: character string; full path to the directory containing both
% gapfilled and with-gaps ameriflux files. Ignored if
% prompt_for_files is true.
%
% OUTPUTS:
% no outputs
%
% author: Timothy W. Hilton, UNM, Feb 2012
%-------------------------
% Initialization tasks
%--------------------------
[ this_year, ~, ~, ~, ~, ~ ] = datevec( now() );
args = inputParser;
args.addRequired( 'sitecode', ...
@(x) ( isintval( x ) | isa( x, 'UNM_sites' ) ) );
args.addRequired( 'year', ...
@(x) ( isintval( x ) & ( x >= 2006 ) & ( x <= this_year ) ) );
args.addParamValue( 'prompt_for_files', false, @islogical );
args.addParamValue( 'AFlux_dir', '', @ischar );
% parse optional inputs
args.parse( sitecode, year, varargin{ : } );
sitecode = args.Results.sitecode;
year = args.Results.year;
% determine screensize
scrsz = get(0,'ScreenSize');
% read site names
sites_ds = parse_UNM_site_table();
if args.Results.prompt_for_files
start_dir = fullfile( getenv( 'FLUXROOT' ), 'Ameriflux_files', '*.txt' );
h = msgbox( 'Select the with-gaps Ameriflux file', '' );
waitfor( h );
[ fname_gaps, path_gaps ] ...
= uigetfile( start_dir, 'Select the with-gaps Ameriflux file' );
fname_gaps = fullfile( path_gaps, fname_gaps );
h = msgbox( 'Select the gapfilled Ameriflux file', '' );
waitfor( h );
[ fname_filled, path_filled ] = ...
uigetfile( start_dir, 'Select the gapfilled Ameriflux file' );
fname_filled = fullfile( path_filled, fname_filled );
else
if isempty( args.Results.AFlux_dir )
AFlux_dir = fullfile( getenv( 'FLUXROOT' ), 'Ameriflux_files' );
else
AFlux_dir = args.Results.AFlux_dir;
end
% parse the Ameriflux Files
fname_gaps = fullfile( AFlux_dir, ...
sprintf( '%s_%d_with_gaps.txt', ...
sites_ds.Ameriflux{ sitecode }, year ) );
fname_filled = fullfile( AFlux_dir, ...
sprintf( '%s_%d_gapfilled.txt', ...
sites_ds.Ameriflux{ sitecode }, year ) );
end
fprintf( 'Ameriflux_Data_Viewer: parsing %s and %s\n', ...
fname_gaps, fname_filled );
data_gaps = parse_ameriflux_file( fname_gaps );
data_filled = parse_ameriflux_file( fname_filled );
nfields = max( size( data_gaps, 2 ), size( data_filled, 2 ) );
if not( isnan( sitecode ) )
fig_name = sprintf( 'UNM Ameriflux Data Viewer - %s %d', ...
get_site_name( sitecode ), year );
else
fig_name = 'Ameriflux Data Viewer';
end
% create a figure to contain the GUI, use entire screen
fh = figure( 'Name', fig_name, ...
'Position', scrsz .* [ 1, 1, 0.8, 0.8 ], ...
'NumberTitle', 'off', ...
'ToolBar', 'figure', ...
'MenuBar', 'none' );
% start with column 5 (UST); first four columns are just time fields
set( fh, 'UserData', struct( 'cur_col', 5, ...
'FontSize', 20 ) );
%--------------------------
% Construct GUI components
%--------------------------
%add axes for plots
axh_gap = axes( 'Parent', fh, ...
'Units', 'normalized', ...
'HandleVisibility','callback', ...
'Position',[ 0.1, 0.1, 0.8, 0.4 ] );
% gap_label = uicontrol( fh, ...
% 'Style', 'text', ...
% 'Units', 'normalized', ...
% 'Position', [ 0.02, 0.3, 0.1, 0.1 ], ...
% 'String', 'with gaps' );
axh_filled = axes( 'Parent', fh, ...
'Units', 'normalized', ...
'HandleVisibility','callback', ...
'Position',[ 0.1, 0.55, 0.8, 0.4 ] );
% "link" axes so they zoom together
linkaxes( [ axh_gap, axh_filled ], 'xy' );
%add a "previous" button
pbh_prev = uicontrol( fh, ...
'Style', 'pushbutton', ...
'String','previous', ...
'Position', [ 50 10 200 40], ...
'CallBack', { @prev_but_cbk, ...
axh_gap, axh_filled, fh, ...
data_gaps, data_filled } );
%add a "next" button
pbh_next = uicontrol( fh, ...
'Style', 'pushbutton', ...
'String','next', ...
'Position', [ 250 10 200 40], ...
'CallBack', { @next_but_cbk, nfields, ...
axh_gap, axh_filled, fh, ...
data_gaps, data_filled } );
%--------------------------
% plot first field
%--------------------------
plot( axh_gap, data_gaps.DTIME, data_gaps( :, 5 ), '.k', ...
'MarkerSize', 12 );
plot( axh_filled, data_filled.DTIME, data_filled( :, 5 ), '.k', ...
'MarkerSize', 12 );
set( axh_gap, 'xlim', [ 0, 366 ] );
set( axh_filled, 'xlim', [ 0, 366 ] );
xlabel( axh_gap, 'day of year', ...
'FontSize', getfield( get( fh, 'UserData' ), 'FontSize' ) );
title( axh_filled, ...
[ data_filled.Properties.VarNames{ 5 }, ' (gapfilled)' ], ...
'FontSize', getfield( get( fh, 'UserData' ), 'FontSize' ) );
%--------------------------
% Callbacks for GUI
%--------------------------
function cur_col = prev_but_cbk( source, eventdata, ...
axh_gap, axh_filled, fh, ...
data_gaps, data_filled )
%% advance the plots to the next data field
% decrement cur_col
ud = get( fh, 'UserData' );
ud.cur_col = max( ud.cur_col - 1, 5 );
% get the new variable names
vars = get_var( ud.cur_col, data_gaps, data_filled );
if strcmp( vars.var_gaps, '' )
cla( axh_gap )
else
plot( axh_gap, data_gaps.DTIME, data_gaps.( vars.var_gaps ), '.k', ...
'MarkerSize', 12 );
end
update_filled_plot( axh_gap, axh_filled, ...
data_gaps, data_filled, ...
vars );
set( fh, 'UserData', ud );
% set x limits and y limits
set( axh_gap, 'xlim', [ 0, 366 ] );
set( axh_filled, 'xlim', [ 0, 366 ] );
% yrange = [ get( axh_filled, 'YLim' ), get( axh_gap, 'YLim' ) ];
% set( axh_filled, 'YLim', [ min( yrange ), max( yrange ) ] );
% set( axh_gap, 'YLim', [ min( yrange ), max( yrange ) ] );
% label x axis on lower plot
xlabel( axh_gap, 'day of year', ...
'FontSize', getfield( get( fh, 'UserData' ), 'FontSize' ) );
% title string
t_str = strrep( vars.var_filled, '_', '\_');
t_str = strrep( t_str, '0x2E', '.');
title( axh_filled, [ t_str, ' (gapfilled)' ], ...
'FontSize', getfield( get( fh, 'UserData' ), 'FontSize' ) );
%------------------------------------------------------------
function cur_col = next_but_cbk( source, eventdata, nfields, ...
axh_gap, axh_filled, fh, ...
data_gaps, data_filled )
%% plot to the previous data field
% increment cur_col
ud = get( fh, 'UserData' );
ud.cur_col = min( ud.cur_col + 1, nfields );
% get the new variable names
vars = get_var( ud.cur_col, data_gaps, data_filled );
if strcmp( vars.var_gaps, '' )
cla( axh_gap )
else
plot( axh_gap, data_gaps.DTIME, data_gaps.( vars.var_gaps ), '.k', ...
'MarkerSize', 12 );
end
update_filled_plot( axh_gap, axh_filled, ...
data_gaps, data_filled, ...
vars );
set( fh, 'UserData', ud );
%set axis x and y limits
set( axh_gap, 'xlim', [ 0, 366 ] );
set( axh_filled, 'xlim', [ 0, 366 ] );
% yrange = [ get( axh_filled, 'YLim' ), get( axh_gap, 'YLim' ) ];
% set( axh_filled, 'YLim', [ min( yrange ), max( yrange ) ] );
% set( axh_gap, 'YLim', [ min( yrange ), max( yrange ) ] );
% label x axis on lower plot
xlabel( axh_gap, 'day of year', ...
'FontSize', getfield( get( fh, 'UserData' ), 'FontSize' ));
% title string
t_str = strrep( vars.var_filled, '_', '\_');
t_str = strrep( t_str, '0x2E', '.');
title( axh_filled, [ t_str, ' (gapfilled)' ], ...
'FontSize', getfield( get( fh, 'UserData' ), 'FontSize' ) );
%------------------------------------------------------------
function vars = get_var( gapfilled_col, data_gaps, data_filled )
% helper function to match filled, unfilled Ameriflux data columns
var_filled = data_filled.Properties.VarNames{ gapfilled_col };
if strfind( var_filled , 'flag' )
var_gaps = '';
elseif not( ismember( var_filled, data_gaps.Properties.VarNames ) )
var_gaps = '';
else
var_gaps = var_filled;
end
vars = struct( 'var_filled', var_filled, ...
'var_gaps', var_gaps );
%--------------------------------------------------
function update_filled_plot( axh_gap, axh_filled, ...
data_gaps, data_filled, vars )
% UPDATE_FILLED_PLOT - update the "filled data" plot this is a helper function
% for UNM_Ameriflux_Data_Viewer
cla( axh_filled );
pal = cbrewer( 'qual', 'Dark2', 8 );
flag_val = zeros( size( data_filled.DTIME ) );
flag_col = find( strcmp( data_filled.Properties.VarNames, ...
sprintf( '%s_flag', vars.var_filled ) ) );
if ~isempty( flag_col )
flag_val = double( data_filled( :, flag_col ) );
end
this_data = data_filled.( vars.var_filled );
idx_filled = flag_val > 0;
h_obs_points = plot( axh_filled, ...
data_filled.DTIME( ~idx_filled ), ...
this_data( ~idx_filled ), ...
'.k', 'MarkerSize', 12 );
hold( axh_filled, 'on' );
h_filled_points = plot( axh_filled, ...
data_filled.DTIME( idx_filled ), ...
this_data( idx_filled ), ...
'LineStyle', 'none', ...
'Marker', '.', ...
'MarkerSize', 12, ...
'MarkerFaceColor', pal( 1, : ), ...
'MarkerEdgeColor', pal( 1, : ) );
hold( axh_filled, 'off' );
% create a legend
if ~isempty( h_filled_points )
legend( [ h_obs_points, h_filled_points ], 'observed', 'filled' );
else
legend( [ h_obs_points ], 'observed' );
end