Undefined function or variable 'envspectrum'

Question

AMBIKA P S 2018-4-4

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/392593-undefined-function-or-variable-envspectrum

回答： Akira Agata 2018-4-5

I am using MATLAB R2017a: "MATLAB Version: 9.2.0.538062 (R2017a), Operating System: Microsoft Windows 10 Pro Version 10.0 (Build 16299), Java Version: Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot™ 64-Bit Server VM mixed mode".

I came up with an error while using the 'envspectrum' function: "Undefined function or variable 'envspectrum'" eventhough the toolbox is already installed. How to rectify this error?

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AMBIKA P S 2018-4-4

编辑：AMBIKA P S 2018-4-4

在 MATLAB Online 中打开

Thank you about the license. I did not know !

if true
MATLAB                                                Version 9.2         (R2017a)
Simulink                                              Version 8.9         (R2017a)
Aerospace Blockset                                    Version 3.19        (R2017a)
Aerospace Toolbox                                     Version 2.19        (R2017a)
Antenna Toolbox                                       Version 2.2         (R2017a)
Bioinformatics Toolbox                                Version 4.8         (R2017a)
Communications System Toolbox                         Version 6.4         (R2017a)
Computer Vision System Toolbox                        Version 7.3         (R2017a)
Control System Toolbox                                Version 10.2        (R2017a)
Curve Fitting Toolbox                                 Version 3.5.5       (R2017a)
DSP System Toolbox                                    Version 9.4         (R2017a)
Data Acquisition Toolbox                              Version 3.11        (R2017a)
Embedded Coder                                        Version 6.12        (R2017a)
Filter Design HDL Coder                               Version 3.1.1       (R2017a)
Fixed-Point Designer                                  Version 5.4         (R2017a)
Fuzzy Logic Toolbox                                   Version 2.2.25      (R2017a)
Global Optimization Toolbox                           Version 3.4.2       (R2017a)
HDL Coder                                             Version 3.10        (R2017a)
HDL Verifier                                          Version 5.2         (R2017a)
Image Acquisition Toolbox                             Version 5.2         (R2017a)
Image Processing Toolbox                              Version 10.0        (R2017a)
Instrument Control Toolbox                            Version 3.11        (R2017a)
LTE System Toolbox                                    Version 2.4         (R2017a)
MATLAB Coder                                          Version 3.3         (R2017a)
MATLAB Compiler                                       Version 6.4         (R2017a)
MATLAB Compiler SDK                                   Version 6.3.1       (R2017a)
MATLAB Report Generator                               Version 5.2         (R2017a)
Model Predictive Control Toolbox                      Version 5.2.2       (R2017a)
Neural Network Toolbox                                Version 10.0        (R2017a)
Optimization Toolbox                                  Version 7.6         (R2017a)
Parallel Computing Toolbox                            Version 6.10        (R2017a)
Partial Differential Equation Toolbox                 Version 2.4         (R2017a)
Phased Array System Toolbox                           Version 3.4         (R2017a)
RF Blockset                                           Version 6.0         (R2017a)
RF Blockset                                           Version 6.0         (R2017a)
RF Toolbox                                            Version 3.2         (R2017a)
Robotics System Toolbox                               Version 1.4         (R2017a)
Robust Control Toolbox                                Version 6.3         (R2017a)
Signal Processing Toolbox                             Version 7.4         (R2017a)
SimEvents                                             Version 5.2         (R2017a)
Simscape                                              Version 4.2         (R2017a)
Simscape Driveline                                    Version 2.12        (R2017a)
Simscape Electronics                                  Version 2.11        (R2017a)
Simscape Fluids                                       Version 2.2         (R2017a)
Simscape Multibody                                    Version 5.0         (R2017a)
Simscape Power Systems                                Version 6.7         (R2017a)
Simulink Coder                                        Version 8.12        (R2017a)
Simulink Control Design                               Version 4.5         (R2017a)
Simulink Real-Time                                    Version 6.6         (R2017a)
Simulink Report Generator                             Version 5.2         (R2017a)
Stateflow                                             Version 8.9         (R2017a)
Statistics and Machine Learning Toolbox               Version 11.1        (R2017a)
Symbolic Math Toolbox                                 Version 7.2         (R2017a)
System Identification Toolbox                         Version 9.6         (R2017a)
Vehicle Network Toolbox                               Version 3.3         (R2017a)
WLAN System Toolbox                                   Version 1.3         (R2017a)
Wavelet Toolbox                                       Version 4.18 
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Star Strider 2018-4-4

The envspectrum function was introduced in R2017b.

AMBIKA P S 2018-4-5

在 MATLAB Online 中打开

@Adam 
  'envspectrum' not found.

@Star Strider Alright! Thank you.

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Answer 1

Akira Agata 2018-4-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/392593-undefined-function-or-variable-envspectrum#answer_313550

The function envspectrum was introduced in R2017b, as shown at the bottom of the documentation page. So I would recommend updating your MATLAB to the latest version.

[Documentation page on envspectrum]