I try to build modular, reusable code in labview.
I want to create a UI component that allows me to select one of the files or directories in a given directory.
I created a subvi that does this. So far so good.
I can use this subvi as a component in other vis, by putting it into a subpanel.
I want to have several of such subpanels with an "instance" of the subvi in my main vi.
I cannot do this. Labview opens the subvi in one subpanel and throws an error for opening it in another one.
How can I tell Labview to create a duplicate/new "instance" of the subvi that runs independently from the any other one?
I found out that xcontrol are probably a better approach to creating components, but they are not available to me, whether they solve the above problem or not.
Labview 2013
You need to configure the subvi to be reentrant.
This allows LabVIEW to allocate data space for each instance.
There are different types of reentrancy, I would stick with the pre-allocated option to start.
http://zone.ni.com/reference/en-XX/help/371361J-01/lvconcepts/reentrancy/
Related
I have hundreds of Catia V5 catparts and catproducts in a folder on hard disc. I want to know if a particular catpart is used in some catproduct or not. If it is not used in any product, I want to delete it and clean my hard disc. One way to do it is to open all catproducts one by one and check carefully they contain this model. This is cumbersome process and can lead to serious mistakes. Is there some automatic way to check it? If not, is it possible to write some macro for that purpose?
It is possible with a VBA script. If it's just Catpart file that your looking for in a product, then your script would work as follows
query your folder(s) for all catparts and catproducts.(use 2 dictionaries or arrays, one for each file type each)
Via a loop, Individually open and load each catproduct and essentially walk the tree and compare each child Catpart to your compiled list of catparts. If a match is found, movethe part to a new "white list"(dictionary or array)
Close the catproduct and check the next one.
Then, when all done, your original list(dictionary or array) will be your unused parts.
I'm not sure exactly how your models are built, but you may need to check for additional references/links in your catproducts (additional logic) before doing something like this.
I need to implement a custom ResultHandler but I am confused about how to actually integrate my custom class into the software package.
I have read this: http://elki.dbs.ifi.lmu.de/wiki/HowTo/InvokingELKIFromJava but my question is how are you meant to implement a custom result handler such that it shows up in the GUI?
The only way I can think of doing it is by extracting the elki.jar package and manually inserting my custom class into the source code, and then re-jarring the package. However I am fairly sure this is not the way it is meant to be done.
Also, in my resulthandler I need to output all the rows to a single text file with the cluster that each row belongs to displayed. How tips on how I can achieve this?
There are two questions in here.
in order to make your class instantiable by the UIs (both MiniGUI and command line), the classes must implement our Parameterization API. There are essentially two choices to make your class instantiable:
Add a public constructor without parameters (the UI won't know how to set your parameters!)
Add an inner static class Parameterizer that handles parameterization
in order to add your class to autocompletion (dropdown menu), the classes must be discovered by the MiniGUI/CLI/other UIs. ELKI uses two methods of discovery:
for .jar files, it reads the META-INF/elki/interfacename service files. This is a classic service-loader approach; except that we also allow ordering instances.
for directories only, ELKI will also scan for all .class files, and inspect them. This is mostly meant for development time, to avoid having to update the service files all the time. For performance reasons, we do not inspect the contents of .jar files; these are expected to use service files.
You do not need your class to be in the dropdown menu - you can always type the full class name. If this does not work, adding the name to the service file will not help either, but ELKI can either not find the class at all, or cannot instantiate it.
There is also a tutorial on implementing a custom result handler, but it does not discuss how to add it to the menu. In "development mode" - when having a folder with .class files - it will show up automatically.
Not really critical question, but i'm curious
I am working on a form and sometimes the generated function name is /1BCDWB/SF00000473, and sometimes /1BCDWB/SF00000472. This goes back and forth.
Does anyone know what's the idea behind this? Cuz i'm quite sure it's not a bug (or i might be wrong on that).
It is not a bug. You always have to use SSF_FUNCTION_MODULE_NAME to determine the actual function module name and call it dynamically using CALL FUNCTION l_function_module.
Smartform FMs are tracked by internal numbering and thats saved in the table STXFADMI. You would always notice the different number in Development System if you have deleted any existing Form. Similarly, you would also notice the different number in your Quality system based on the sequence the forms are imported in QAS and the forms as well (as test forms are not migrated to QAS.
Similar behavior is also true for Adobe Form generated FMs.
You need to understand that every smartform has a different interface and hence the automatically generated function module needs to have different import parameters.
Due to this reason the 'SSF*' FMs generate a FM specific for your smartform. The name of the 'generated' FM changes when you migrate from one system to another. And that's the reason why you should use a variable while calling the 'generated' fm and not hardcode it.
The same goes with Adobe form as someone has rightly said in this thread.
Can anyone share his experience on workflow for R peject development under ESS? I tried several times to learn emacs but I have not get it yet. I can understand ESS as an editor, but is there a project view in ESS? what's the efficient ways to set up/view R project directory, coding, and testing, and how's ESS has an edge to facilitate the whole process?
Do you use ESS as a good R editor only or tend to emulate a R IDE environment within ESS?
Thanks for any advices.
It sounds like you're asking two separate questions.
One question concerns workflow and the other concerns using ESS.
As I use StatET and Eclipse, I'll just share my experience regarding the workflow aspect of your question.
As with Vincent I also follow something like the workflow set out by Josh Reich here (also see Hadley's useful comments):
Workflow for statistical analysis and report writing
Although it can vary between projects, I tend to have a couple of main R files
import.R: this imports data files and does any necessary cleaning and manipulation
analyse.R: This generates the output that I need for any final report
main.R: This calls import.R and analyse.R
The aim is for import.R and analyse.R to represent the complete and final workflow for producing the final results of any analyses.
In terms of a directory structure for an analysis project, I'll often also have the following folders
data: for storing any raw data files
meta: for storing meta data, such as variable labels, scoring systems for tests, recoding information, etc.
output: for storing any graphics, tables, or text generated by my analyses that I might want to incorporate into an external program
temp: When exploring the data and brainstorming analyses, I like to type code into files instead of using the console. I tend to label these temp1.R, temp2.R, temp3.R. I store these in a temp folder. That way I have a permanent record that's easily accessible. If the analyses become final they get incorporated into one of the main R files (i.e., import.R or analysis.R)
functions: If I think that a function will be needed across a couple of projects, I often place it one function per file or a set of related functions in a file in a folder called functions. This makes it relatively easy to reuse functions across projects, when the formal requirements of package development are more than needed.
library: If I want to create some general functions that I think will be project specific, I'll place them in this folder
save: A folder to store any saved R objects
StatET and Eclipse make it easy to interact with such a file system.
Of course, given all the R gurus that use ESS and Emacs, I'm sure it also handles interactions with the file system well.
I'm not exactly sure what you expect as an answer on this one. I, for one, have stolen (and adapted) a system that was suggested here a little while ago (by Josh Reich):
Create a folder for every project, and split up your work in a bunch of different .R files:
Load.R for getting your raw data into R;
Prep.R for cleaning the data, recoding variables, etc.;
Func.R for coding any custom functions you will need for evaluation; and
Eval.R for running your final stuff.
If that doesn't fit your style, just change it.
Then, you can either have a master file to call each of the parts one after each other (good for reproducibility), or save at different stages and have the individual scripts load the appropriate data (good if some of the prep work is very computationally/time intensive).
**
On a different note, the trick that is posted at the link really helped me get into ESS. It turns Shift-Enter into a one-stop-ESS-shop: http://www.kieranhealy.org/blog/archives/2009/10/12/make-shift-enter-do-a-lot-in-ess/
Others have given you some good ideas about how to setup your directory/file structure for a project.
You also asked about "project views," in which case you might want to look into the Emacs Code Browser (ECB).
You can find some screen shots of it in action on its site, here:
http://ecb.sourceforge.net/screenshots/index.html
I have created a couple of activities and stored them as XAML.
Opening them in the Workflowdesigner works great and I can Execute them.
Now I would like to create a new Activity and add the activities I created to it.
Basically loading it from the XAML and into the designer as part of another activity/flow.
I have tried adding my activities to the toolbox but the render as dynamicactivity and (understandably) does not work.
Any suggestions?
Is it even possible?
/Jimmy
DynamicActivity and the toolbox were basically not designed to work together that way. The toolbox expects to deal with types, not class instances.
One thing you can do instead is subclass IActivityTemplateFactory and in the Create() function return DynamicActivity. But you will probably have some really weird issues once you try to save a XAML file created which contains dynamic activities. Because in fact the designer doesn't do any special treatment for DynamicActivity, and it will not get serialized as any kind of 'logical reference' to the XAML file you created it from.
Tim