Undefined function or variable 'envspectrum'

2018 4 4
1 个回答
更新时间：2018 4 5
11 次查看（30 天）

0 个投票

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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Adam
Adam 2018-4-4
Don't post your license information in a public answers forum. I deleted it from your question since it is only relevant if you send details to Mathworks tech support, not for a user forum.
AMBIKA P S
AMBIKA P S 2018-4-4
编辑：AMBIKA P S 2018-4-4
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
Star Strider 2018-4-4
The envspectrum function was introduced in R2017b.
AMBIKA P S
AMBIKA P S 2018-4-5
@Adam
'envspectrum' not found.
@Star Strider Alright! Thank you.

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回答（1 个）

Akira Agata
Akira Agata 2018-4-5

0 个投票

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]

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