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LabVIEW 2009 MathScript Real-Time Module X86WinENG LV2009文本数学脚本实时模块MSRT2009 Win32位英文版下载
LabVIEW MathScript模块帮助您将自定义的文本数学代码部署到LabVIEW应用程序中和NI实时硬件上。
LabVIEW MathScript模块是LabVIEW编程环境的一个附加软件，包含750多种用于信号处理、分析和数学运算的内置文本函数。该模块还提供了一个交互式可编程界面。专为脚本编程而设计的MathScript交互式窗口提供命令行界面，方便用户下载、保存、设计和执行文本文件脚本。MathScript节点专为脚本部署而设计，作为LabVIEW的一项嵌入式功能，可将基于文本的变量与图形化LabVIEW代码的输入与输出连接起来。该模块适用于LabVIEW以及所有LabVIEW Real-Time硬件终端。
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LabVIEW 2009 MathScript RT Module Readme
June 2009
This file contains information to introduce you to the LabVIEW MathScript RT Module. This file also provides you with additional help resources you can use while working with the module.
Overview
System Requirements
Installation Instructions
Windows
Mac OS
Linux
Accessing the Help
Finding Examples
New Features
Behavior Changes
Known Issues
Bug Fixes
Documentation Updates
Overview
LabVIEW MathScript is a text-based language you can use to write functions and scripts. You can process scripts using LabVIEW MathScript in the LabVIEW MathScript Window or a MathScript Node.
Use the LabVIEW MathScript Window to edit and execute mathematical commands, create mathematical scripts, and view numerical and graphical representations of variables. Select Tools»MathScript Window to display this window.
Use the MathScript Node to execute your LabVIEW MathScripts and other text-based scripts on the block diagram using the MathScript RT Module engine. You can save scripts that you create in the LabVIEW MathScript Window and load them in the MathScript Node and vice versa.
System Requirements
The MathScript RT Module has the following requirements:
Installation Instructions
Complete the following steps to install the MathScript RT Module.
Windows
You can install all of your LabVIEW products—including the MathScript RT Module—using the LabVIEW 2009 Platform DVDs. You can find installation instructions for the module along with activation instructions in the following locations:
LabVIEW Release Notes, which are available in your LabVIEW software kit.
LabVIEW 2009 Platform DVDs Readme, which is available on the top-level of LabVIEW Platform DVD 1.
To request additional LabVIEW 2009 Platform DVDs, refer to the National Instruments Web site.
Mac OS
Complete the following steps to install the LabVIEW 2009 MathScript RT Module on Mac OS X from the LabVIEW 2009 MathScript RT Module installation CD.
Linux
Complete the following steps to install the LabVIEW 2009 MathScript RT Module on Linux from the LabVIEW MathScript RT Module installation CD.
Log into the system as root.
Insert the LabVIEW 2009 MathScript RT Module installation CD. Use mount /mnt/cdrom to mount the CD. On some systems, the CD mounts automatically.
To change the current directory to the mounted CD, enter the following command:
cd /mnt/cdrom
To run the installation script, enter the following command:
sh ./INSTALL
If you encounter the message bad interpreter: Permission denied, the CD might not have mounted with executable permissions. To avoid this, enter the following command:
/bin/sh ./INSTALL
Accessing the Help
Refer to the Fundamentals»Formulas and Equations book on the Contents tab in the LabVIEW Help for more information about the MathScript RT Module.
Finding Examples
LabVIEW examples for the MathScript RT Module are located in the labviewexamplesMathScript directory. You can modify an example VI to fit an application, or you can copy and paste from one or more examples into a VI that you create.
New Features
The LabVIEW 2009 MathScript RT Module introduces the following enhancements and changes to LabVIEW MathScript.
Deployment to Real-Time Targets
(Windows) The MathScript RT Module functions run on all real-time hardware targets. Refer to the LabVIEW Real-Time Module Release and Upgrade Notes for information on using the MathScript RT Module on RT targets.
Script Highlighting in MathScript Nodes
LabVIEW 8.6 introduced script highlighting, which uses colors to distinguish between different parts of a script in a MathScript Node. MathScript Nodes in LabVIEW 2009 feature two types of script highlighting:
Syntax highlighting—Displays script elements such as operators and comments in different colors, as in LabVIEW 8.6. Syntax highlighting allows you to see when a user-defined function or a variable overrides a built-in MathScript function.
Data type highlighting—Displays the data types of variables in different colors and font attributes. Data type highlighting allows you to observe the data types of variables throughout your script.
To enable either syntax highlighting or data type highlighting for a particular MathScript Node, right-click inside the node and select Script Highlighting»Syntax or Script Highlighting»Data Types from the shortcut menu. Syntax highlighting is enabled by default. You cannot enable both syntax and data type highlighting for the same MathScript Node.
When you enter a script while data type highlighting is enabled, click outside the node to apply colors and font attributes. To customize the appearance of data types in MathScript Nodes, use the MathScript page of the Options dialog box. To disable script highlighting for a particular node, right-click inside the node and select Script Highlighting»None from the shortcut menu.
To enable or disable script highlighting for all MathScript Nodes, use the MathScript page of the Options dialog box.
Data Types in MathScript Nodes
You can now configure MathScript Node output terminals to use the following data types, including one-dimensional and two-dimensional arrays of the data types:
Single-precision, floating-point numeric
Extended-precision, floating-point numeric
Complex single-precision, floating-point numeric
Complex extended-precision, floating-point numeric
8-bit signed integer numeric
16-bit signed integer numeric
32-bit signed integer numeric
64-bit signed integer numeric
8-bit unsigned integer numeric
16-bit unsigned integer numeric
32-bit unsigned integer numeric
64-bit unsigned integer numeric
Configuring the Data Type of MathScript Node Output Terminals
LabVIEW determines the data types of variables in MathScript Nodes at edit time. The data type is the smallest type that encompasses all possible values of the variable.
By default, LabVIEW automatically selects the data type for output terminals when you click outside a MathScript Node. Right-click an output terminal and move the cursor over the Choose Data Type shortcut menu item to view the data type or data types LabVIEW determines in the shortcut menu. LabVIEW marks the data types it determines with an asterisk (*).
You can configure the data type of an output terminal manually by right-clicking the terminal and selecting the desired data type from the Choose Data Type»All Types submenu in the shortcut menu.
Refer to the Configuring the Data Type of MathScript Node Terminals topic in the LabVIEW Help for more information about configuring the data type of MathScript Node terminals.
Context Help For Your Scripts in MathScript Nodes
You can click outside a MathScript Node and then move the cursor over a variable in the node to display its data type in the Context Help window. You also can move the cursor over a built-in MathScript function to display information about the function in the Context Help window. If you move the cursor over a user-defined function that contains comments, the Context Help window displays the path to the user-defined function and the first group of commented lines from your .m file.
New MathScript Functions
LabVIEW 2009 includes the is_student function. You can use this function in the LabVIEW MathScript Window or a MathScript Node.
Miscellaneous MathScript Enhancements and Changes
LabVIEW 2009 includes the following miscellaneous MathScript enhancements and changes:
The MathScript: Search Paths page and the MathScript: Script Highlighting pages of the Options dialog box were combined into one page.
The Mac OS and Linux operating systems support the pause function, although you must specify the number of seconds to wait before continuing execution as an input.
The bitshift function accepts 0 for the first input.
The maximum image size you can use with the fread_image and fwrite_image functions increased to 4 megapixels.
The quantdecode and quantencode functions no longer accept complex inputs.
The inf and nan functions accept inputs, which generate a matrix of values that are infinity or NaN, respectively.
Behavior Changes
The LabVIEW 2009 MathScript RT Module introduces the following behavior changes to LabVIEW MathScript.
MathScript Function Name Changes
A subset of MathScript RT Module function names changed to ensure a consistent and usable format across all function classes. The MathScript RT Module has the ability to read and process your previously authored MathScripts with legacy function names to provide backward compatibility.
Support for MathScript Functions in the LabVIEW Run-Time Engine
The following functions are now supported in the LabVIEW Run-Time Engine:
dir
fpritnf
fread_audio
fread_image
frewind
fscanf
fseek
fwrite_image
getfileproperty
labviewroot
ls
pathdefault
pathfwrite
pathseparator
setfileproperty
tempdir
textread
wavread
wavwrite
The following functions return an error when called in the LabVIEW Run-Time Engine if you request an output from these functions. If you do not request an output, the LabVIEW Run-Time Engine does not execute these functions. Either do not request an output or remove these functions from your scripts before you build a stand-alone application or shared library.
The load function is supported in the LabVIEW Run-Time Engine only if you request an output. Either request an output or remove these functions from your scripts before you build a stand-alone application or shared library. Refer to the Documentation Updates section for more information about requesting an output from the load function.
The following functions return an error when called in the LabVIEW Run-Time Engine if you specify an input for these functions. If you specify an output for these functions, the LabVIEW Run-Time Engine executes these functions as normal.
The following functions are no longer supported in the LabVIEW Run-Time Engine. Remove these functions from your scripts before you build a stand-alone application or shared library.
Refer to the MathScript RT Module Functions Not Supported in the LabVIEW Run-Time Engine topic in the LabVIEW Help for more information about MathScript RT Module functions the LabVIEW Run-Time Engine does not support.
Miscellaneous MathScript Behavior Changes
LabVIEW MathScript RT Module 2009 includes the following miscellaneous behavior changes:
Custom script highlighting colors you applied in a LabVIEW 8.6 VI using the MathScript: Script Highlighting page of the Options dialog box do not apply when you open the VI in LabVIEW 2009.
If you open a VI saved in LabVIEW 8.6 or earlier in LabVIEW 2009, LabVIEW maintains the data types of output terminals on MathScript Nodes from the previous version. If the data type from the previous version differs from the data type LabVIEW determines, the terminals contain coercion dots, and the Auto Select Type shortcut menu item is not selected.
MathScript Nodes no longer support two-dimensional arrays of the string data type.
Known Issues
You can access the software and documentation known issues list online. Refer to the National Instruments Web site for an up-to-date list of known issues in the MathScript RT Module.
Bug Fixes
The following items are the IDs and titles of a subset of issues fixed in the LabVIEW 2009 MathScript RT Module. This is not an exhaustive list of issues fixed in the current version of the MathScript RT Module. If you have a CAR ID, you can search this list to validate the issue has been fixed.
[table
]
[tr][td]ID[/td][td]Legacy ID[/td][td]Fixed Issue[/td][/tr]
[tr][td]45171[/td][td]4I0CQOPW[/td][td]Script with nested for loops and array indexing is slow[/td][/tr]
[tr][td]49000[/td][td]3X1D6203[/td][td]Development between systems with and without add-on functions may break unexpectedly[/td][/tr]
[tr][td]53118[/td][td]4ELI7NVQ[/td][td]MathScript: bitshift incorrect when first argument is zero, such as bitshift(0,1)[/td][/tr]
[tr][td]99336[/td][td]-[/td][td]MathScript cannot recognize variables loaded from external data file with illegal characters[/td][/tr]
[tr][td]107327[/td][td]-[/td][td]VI remains broken after finding missing .m file[/td][/tr]
[tr][td]112426[/td][td]-[/td][td]In MathScript Node, Import Script does not work for read-only files[/td][/tr]
[tr][td]125075[/td][td]-[/td][td]MathScript load function can't read from text files[/td][/tr]
[tr][td]128760[/td][td]-[/td][td]Application built using MathScript fails to run on a stand alone because of name collisions[/td][/tr]
[tr][td]129922[/td][td]-[/td][td]MathScript constants like nan or inf don't accept inputs to produce a matrix output[/td][/tr]
[tr][td]129928[/td][td]-[/td][td]MathScript subplot and pause functions throw away errors[/td][/tr]
[tr][td]138072[/td][td]-[/td][td]fread_image (imread) and fwrite_image (imwrite) do not work in Run-Time Engine[/td][/tr]
[tr][td]138360[/td][td]-[/td][td]wavread does not load file with absolute path on Linux[/td][/tr]
[tr][td]138427[/td][td]-[/td][td]delaunay and triangsearch execute more slowly than in previous versions[/td][/tr]
[tr][td]156396[/td][td]-[/td][td]'axis auto' does not re-scale the axes of plot automatically[/td][/tr]
[tr][td]160840[/td][td]-[/td][td]Delete fails to delete file with wildcards ? and *[/td][/tr]
[/table]Documentation Updates
You can use the load function with the following syntax to load data separated by spaces, commas, or tabs from ASCII files: a = load(file). You cannot use this syntax to load data from .mlv, .mat, .tdm, or .tdms files. You can use this syntax in a stand-alone application or shared library.
Important Information
Copyright
© 2009 National Instruments Corporation. All rights reserved.
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.
National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
For copyright notices, conditions, and disclaimers, including information regarding certain third-party components used in the MathScript RT Module, refer to the Copyright topic of the LabVIEW Help.
Trademarks
National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective companies.
Patents
For patents covering the National Instruments products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents.
