I am having trouble reading textfile data into my app using uigetfile and readtable functions in appdesigner. Kindly assist

I am using a pushbutton.userdata option to read the textfiles and i am not sure if thats the right way to do it. Once the data is read in the dialogbox app. it should be passeed to the main app to complete calculations using ode45 integration.

[The data provided is daily for 365days, kindly run the model from the 1st,JAN,2023 to 31st,DEC,2023] i.e choose the start date as January, 1st, 2023 and end date as December, 31st, 2023 under the simulation tab.

I am encountering the following errors when i push the Runmodel button under the simulation tab.

Error while evaluating Button PrivateButtonPushedFcn.

Warning: Failure at t=4.400000e+01. Unable to meet integration tolerances without reducing the step size below the smallest value

allowed (1.136868e-13) at time t.

> In ode45 (line 662)

In IAA_1/RunModelButtonPushed (line 249)

In matlab.apps.AppBase>@(source,event)executeCallback(ams,app,callback,requiresEventData,event) (line 62)

Attched are the apps and the CWR data (CWR.txt), Rainfalldata(PCP.txt), Wind_data(WND.txt), Humidity_data(HMD.txt), Temperature_data(TMP.txt), Daylighthours(DLH.txt)

Moreover, when i try to write the data i have read, there seems to be mixup. Like CRW data contains TMP data and vice versa. Kindly assist.

Answer 1

[Voss]

All of the IAA_1 app's properties that are passed to the second app (T_wout, T_win, Sr, etc.) are initially empty [].

You can either initialize them to non-empty values, e.g., in IAA_1, where they are defined as app properties:

properties (Access = private)

Dialogapp1

T_wout = 27

T_win = 27

Sr = 2

% etc.

Or you can check whether they're empty in the startupFcn of WATER_TMP_Dialogbox_1, and only update the components corresponding to non-empty values:

if ~isempty(T_wout)

app.T_woutEditField.Value=T_wout;

end

if ~isempty(T_win)

app.T_winEditField.Value=T_win;

end

if ~isempty(Sr)

app.srEditField.Value = Sr;

end

% etc.

Or you can do both of those things.

[Daniel]

Thank you so much for your response. How about the 'Warning: Failure at t=4.400000e+01. Unable to meet integration tolerances without reducing the step size below the smallest value

allowed (1.136868e-13) at time t.

> In ode45 (line 662)'

[Voss]

You're welcome!

Not sure about that warning.