force required number of save creds/config inputs

Author: BRONSOLO

plotly/plotly_user_aux/saveplotlyconfig.m

@@ -3,6 +3,14 @@ function saveplotlyconfig(plotly_domain,plotly_streaming_domain)
 % Plotly config info are saved as JSON strings
 % in ~/.plotly/.config
 
+% catch missing input arguments
+if nargin < 1 
+    error('plotly:saveconfig', ...
+    ['Incorrect number of inputs. Please save your configuration ', ...
+    'as follows: >> saveplotlyconfig(plotly_domain,', ...
+    '[optional]plotly_streaming_domain)']); 
+end
+
 % if the config file exists, then load it up
 try
     config = loadplotlyconfig();

plotly/plotly_user_aux/saveplotlycredentials.m

@@ -3,6 +3,14 @@ function saveplotlycredentials(username, api_key, stream_ids)
 % Plotly credentials are saved as JSON strings
 % in ~/.plotly/.credentials
 
+% catch missing input arguments
+if nargin < 2
+    error('plotly:savecredentials', ...
+    ['Incorrect number of inputs. Please save your credentials ', ...
+    'as follows: >> saveplotlycredentials(username, api_key,', ...
+    '[optional]stream_ids)']); 
+end
+
 % if the credentials file exists, then load it up
 try
     creds = loadplotlycredentials();
@@ -45,9 +53,6 @@ function saveplotlycredentials(username, api_key, stream_ids)
         creds.username = username;
         creds.api_key = api_key;
         creds.stream_ids = stream_ids;
-    otherwise %need to specify both the username and api_key
-        error('plotly:savecredentials',...
-        'Please specify your username and api_key');   
 end
 
 creds_string = m2json(creds);