"1:7" as an instruction to read all columns in the used range in Readtable interprets the range specification The used column range within the designated rows. You can identify range by specifying the beginning and ending rows usingĮxcel row designators. Text that is only white space is considered data and is captured within the used Range by trimming any leading and trailing rows and columns that do not contain data. Note: Used Range refers to the rectangular portion of the spreadsheet If unspecified, readtable automatically detects the used Pair argument is not case-sensitive, and uses Excel A1 reference style (see Excel help). Represents the 3-by-5 rectangular region between the two corners D2Īnd H4 on the worksheet. The extent of the data by beginning the import at the start cell and ending at the last Using the starting cell, readtable automatically detects Two element numeric vector of the form indicating the starting row and column. For example, A5 is the identifierįor the cell at the intersection of column A and row Register a custom namespace prefix to the existing namespace URL by setting the RegisteredNamespaces name-value argument.Ĭharacter vector or string scalar containing a column letter and row numberĪ1 notation. Read just the street names into a table by specifying the VariableSelectors name-value argument as the XPath expression of the Street element node. Then, import the subset of data using readtable with the import options object.įirst, create an XMLImportOptions object by using detectImportOptions to detect aspects of your XML file. Specify the subset of variables to import by modifying the import options object. To display a preview of the table, use preview VariableOptions: Īccess VariableOptions sub-properties using setvaropts/getvaropts Variable Import Properties: Set types by name using setvartype % SIMPLEAPP Interactively explore plotting functions % Choose the function used to plot the sample data to see the % differences between surface plots, mesh plots, and waterfall plots % Create figure windowĭd.DelimitedTextImportOptions with properties: Call the appropriate plotting function and specify the input axes as the axes to plot on. In the callback function, access the new drop-down value using the event argument and then use this value to determine how to update the plot data. Define changePlotType to accept src and event in addition to a third input argument that specifies the axes to plot on. The first argument contains the component that triggered the callback, and the second argument contains information about the user interaction. These input arguments are often named src and event. MATLAB automatically passes two input arguments to every callback function when the callback is triggered. In the simpleApp.m file, after the simpleApp function, define a callback function named changePlotType. In this example, program your app to update the plot when a user selects a new drop-down item. Write a callback function and assign it to an appropriate callback property to control the behavior of your app. Every UI component has multiple callback properties, each of which corresponds to a different user interaction. A callback function is a function that executes when the app user performs a specific interaction, such as selecting a drop-down item. Program your app to respond to user interactions by using callback functions.
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