# Latest **URL:** https://mworks.discourse.group/latest.md?page=9 [Latest](https://mworks.discourse.group/latest.md) · [Categories](https://mworks.discourse.group/categories.md) · [Tags](https://mworks.discourse.group/tags.md) **Page:** 10 --- ## [Ordering New DAQ](https://mworks.discourse.group/t/ordering-new-daq/131)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 6\ **Last updated:** [May 25, 2021, 4:20pm UTC](https://mworks.discourse.group/t/ordering-new-daq/131 "2021-05-25T16:20:04Z")
Hi Chris, I have an NI I/O board in my current rig, and I’m thinking of transitioning to an Arduino Uno based on the post you had shared. Before making the purchase, I just wanted to check if you’d heard of any strong a… --- ## [Equality operator for lists](https://mworks.discourse.group/t/equality-operator-for-lists/132)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 1\ **Last updated:** [May 14, 2021, 1:47pm UTC](https://mworks.discourse.group/t/equality-operator-for-lists/132 "2021-05-14T13:47:24Z")
Hi Chris, In MWorks, how does the equality operator work for lists, does it do deep comparison? For example, are all of the following reports correct below? Mark var ab = \[1,2,3\] if (ab == \[1,2,3\] { report(‘hopefu… --- ## [ITC 18 Front Panel TTL out](https://mworks.discourse.group/t/itc-18-front-panel-ttl-out/133)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 1\ **Last updated:** [May 13, 2021, 1:05pm UTC](https://mworks.discourse.group/t/itc-18-front-panel-ttl-out/133 "2021-05-13T13:05:36Z")
Hi there, We’ve been using the ITC18 TTL pulses, and it seems like our lab’s legacy usage utilizes the backpanel ribbon, that connects to a custom switchbox. Is there any way to utilize the front panel of the ITC 18? Fo… --- ## [Generating videos of stimuli](https://mworks.discourse.group/t/generating-videos-of-stimuli/134)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 14\ **Last updated:** [April 29, 2021, 1:03pm UTC](https://mworks.discourse.group/t/generating-videos-of-stimuli/134 "2021-04-29T13:03:52Z")
Hi Chris, We are planning to conduct an experiment online via a platform called labvanced. It is a cognitive task so we need very simple stimuli which we have generated with a plugin that Ralf wrote. Each stimulus has… --- ## [Playing videos of different lengths on MWorks](https://mworks.discourse.group/t/playing-videos-of-different-lengths-on-mworks/135)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 3\ **Last updated:** [April 26, 2021, 2:50pm UTC](https://mworks.discourse.group/t/playing-videos-of-different-lengths-on-mworks/135 "2021-04-26T14:50:30Z")
Hi Chris, I have some clips (mp4 files) of different lengths that I’d like to use as my RSVP stimuli. Is there a way to either read the length of a clip, or to automatically move on to the next task state when the video… --- ## [Linear eye calibrator](https://mworks.discourse.group/t/linear-eye-calibrator/136)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 1\ **Last updated:** [April 22, 2021, 2:54pm UTC](https://mworks.discourse.group/t/linear-eye-calibrator/136 "2021-04-22T14:54:53Z")
Hi Yasmine, Following up on your questions about MWorks’ linear eye calibrator: For each eye coordinate (horizontal and vertical), the calibrator fits three parameters: a constant offset, and two gain factors, one for … --- ## [Labjack LED](https://mworks.discourse.group/t/labjack-led/137)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 2\ **Last updated:** [April 22, 2021, 1:55pm UTC](https://mworks.discourse.group/t/labjack-led/137 "2021-04-22T13:55:50Z")
Hi Chris, Thanks again for your help with my last issue. I am setting up to get some optogenetics going, and for some reason when as soon as I load an XML file (doesn’t matter which one), the LED turns on and won’t be m… --- ## [Experiment authoring questions](https://mworks.discourse.group/t/experiment-authoring-questions/138)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 14\ **Last updated:** [March 29, 2021, 1:38pm UTC](https://mworks.discourse.group/t/experiment-authoring-questions/138 "2021-03-29T13:38:20Z")
3 questions: (1) Am I right that none of the example MWELS have code for delivering reward? (2) While an experiment is running, is there a way to prevent the mouse cursor from entering the experimental monitor (VPixx)? … --- ## [Updating to Eyelink 1000 plus](https://mworks.discourse.group/t/updating-to-eyelink-1000-plus/139)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 3\ **Last updated:** [March 26, 2021, 8:41pm UTC](https://mworks.discourse.group/t/updating-to-eyelink-1000-plus/139 "2021-03-26T20:41:19Z")
Hi Chris, I moved a computer that was using an Eyelink 1000 to a new setup using Eyelink 1000 plus. I ran one of our experiments on it, and it will connect, but 2 wierd and possibly related things happen. When mworks fi… --- ## [Range replicator](https://mworks.discourse.group/t/range-replicator/140)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 3\ **Last updated:** [March 24, 2021, 11:48pm UTC](https://mworks.discourse.group/t/range-replicator/140 "2021-03-24T23:48:57Z")
Hi Chris - Another quick question as I learn the ropes! I’m adapting code from Marianna at NYU that uses range\_replicator to determine a range of x/y positions for a stimulus, as follows: list calibration\_list (select… --- ## [Glickfeld lab support - Xcode error when compiling labjack bundle](https://mworks.discourse.group/t/glickfeld-lab-support-xcode-error-when-compiling-labjack-bundle/141)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 6\ **Last updated:** [March 19, 2021, 6:53pm UTC](https://mworks.discourse.group/t/glickfeld-lab-support-xcode-error-when-compiling-labjack-bundle/141 "2021-03-19T18:53:16Z")
Hi Chris, My name is Jenny and I’m a grad student in Lindsey’s lab. I am setting up Mworks on a new computer in the lab, and when trying to run the Labjack plugin project in Xcode, I’ve been coming across this error. Th… --- ## [Interfacing with MRI scanner](https://mworks.discourse.group/t/interfacing-with-mri-scanner/142)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 6\ **Last updated:** [March 15, 2021, 3:50pm UTC](https://mworks.discourse.group/t/interfacing-with-mri-scanner/142 "2021-03-15T15:50:25Z")
Hi Chris, we have presumably a rather simple issue atm. We would like to perform an mWorks experiment in an MRI scanner. Once the scanner is ready to record, we would like to start our procedure. So far we have achiev… --- ## [Typo in documentation (?)](https://mworks.discourse.group/t/typo-in-documentation/143)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 1\ **Last updated:** [March 15, 2021, 3:00pm UTC](https://mworks.discourse.group/t/typo-in-documentation/143 "2021-03-15T15:00:37Z")
Hi there, In the process of using the persistent mode on one of my variables I found out that in the documentation it is called persistant with an a instead. I am not sure that is intended or is a little error, I just … --- ## [Issues with 2013 Mac Pro?](https://mworks.discourse.group/t/issues-with-2013-mac-pro/144)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 2\ **Last updated:** [March 11, 2021, 7:45pm UTC](https://mworks.discourse.group/t/issues-with-2013-mac-pro/144 "2021-03-11T19:45:15Z")
Hi Sachi, Alina shared part of an email you sent her with me, which I hope you don’t mind me quoting here: The problem I had (which Michael might be alluding to) was with my current rig: the Mac Pro machine is old (~2… --- ## [Mworks and new macs](https://mworks.discourse.group/t/mworks-and-new-macs/145)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 4\ **Last updated:** [March 10, 2021, 9:22pm UTC](https://mworks.discourse.group/t/mworks-and-new-macs/145 "2021-03-10T21:22:55Z")
Hi Chris, I also have the opportunity to buy a laptop for myself to use in the lab. I am a windows user all my life, but realize I am in a mac lab now. One reason to pick a mac would be mworks coding at home… But there … --- ## [Reading from an mwk2 file not saved properly](https://mworks.discourse.group/t/reading-from-an-mwk2-file-not-saved-properly/146)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 2\ **Last updated:** [March 10, 2021, 3:01pm UTC](https://mworks.discourse.group/t/reading-from-an-mwk2-file-not-saved-properly/146 "2021-03-10T15:01:25Z")
Hi Chris, Recently the computer I’m running MWorks on crashed mid-way through an experiment. I’m wondering if it’d still be possible to recover the data? (I have two copies of the file for that session — \*.mwk2 and \*.mw… --- ## [Consulting computer purchase](https://mworks.discourse.group/t/consulting-computer-purchase/147)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 1\ **Last updated:** [February 26, 2021, 9:58pm UTC](https://mworks.discourse.group/t/consulting-computer-purchase/147 "2021-02-26T21:58:28Z")
Hello Chris, My name is Michael Yoo, a postdoc working with Mehrdad. I plan to buy a MacPro for a new primate rig, and Mehrdad advised me to consult with you before the purchase. The main reason we want MacPro is the P… --- ## [Issue loading mp4 file in MWorks](https://mworks.discourse.group/t/issue-loading-mp4-file-in-mworks/148)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 4\ **Last updated:** [February 22, 2021, 3:49pm UTC](https://mworks.discourse.group/t/issue-loading-mp4-file-in-mworks/148 "2021-02-22T15:49:03Z")
Hi Chris, I’m running Mworks version 0.8 on a Mac OS 10.14.3, and I’m having trouble loading multiple mp4 videos (I can load up to 400 videos, but if I load say 500 or 600, it gets stuck — loading time \> 30min).I use a … --- ## [Split display from one Mwork session](https://mworks.discourse.group/t/split-display-from-one-mwork-session/149)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 1\ **Last updated:** [January 29, 2021, 3:50pm UTC](https://mworks.discourse.group/t/split-display-from-one-mwork-session/149 "2021-01-29T15:50:03Z")
Hello Chris, I am considering setting up a split display for the two subjects sitting in front of two separate monitors (one monitor for each subject). Then there are two stages in a single trial (e.g., one random-dot m… --- ## [Error at the end of the task](https://mworks.discourse.group/t/error-at-the-end-of-the-task/150)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 3\ **Last updated:** [January 26, 2021, 2:19pm UTC](https://mworks.discourse.group/t/error-at-the-end-of-the-task/150 "2021-01-26T14:19:47Z")
Hi Chris, I’m running a custom-made eye calibration task (the task is coded with OOG library). I have tried the task on other computers (including iMac) and it’s working. However when I run it on my iMac, after the fina… --- ## [Python GUI advice](https://mworks.discourse.group/t/python-gui-advice/151)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 2\ **Last updated:** [January 26, 2021, 4:17am UTC](https://mworks.discourse.group/t/python-gui-advice/151 "2021-01-26T04:17:50Z")
Hi Chris, I’m adding some Python plotting to our experiments through the client Python Bridge. What do you think is the best way to make plots these days? My plan was to update the plot at the end of each trial, and u… --- ## [Video stimulus](https://mworks.discourse.group/t/video-stimulus/152)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 7\ **Last updated:** [January 6, 2021, 3:49am UTC](https://mworks.discourse.group/t/video-stimulus/152 "2021-01-06T03:49:52Z")
Chris, As often before, we have a question related to our desire to keep our experiment files the same across all of our many expt rigs, and just use variables to make changes for each subject or rig. We would like to … --- ## [MWorks interactive game design](https://mworks.discourse.group/t/mworks-interactive-game-design/154)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 44\ **Last updated:** [December 21, 2020, 3:28pm UTC](https://mworks.discourse.group/t/mworks-interactive-game-design/154 "2020-12-21T15:28:23Z")
Hi Chris, I’m following up to tell you that our python environment is implemented and we’re ready to start thinking about the MWorks interaction! See below for details, but maybe it would be good to have a zoom chat ab… --- ## [Arc in MWorks](https://mworks.discourse.group/t/arc-in-mworks/764)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 9\ **Last updated:** [November 23, 2020, 5:02pm UTC](https://mworks.discourse.group/t/arc-in-mworks/764 "2020-11-23T17:02:43Z")
Dear Chris, Is there a way of drawing an arc in MWorks? something like the red object you can see in the attached image. We would like for the arc to change color, luminance, position, and size like any other object. t… --- ## [iPadOS: loading multiple images; frame lag bug is back](https://mworks.discourse.group/t/ipados-loading-multiple-images-frame-lag-bug-is-back/155)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 3\ **Last updated:** [November 19, 2020, 4:24pm UTC](https://mworks.discourse.group/t/ipados-loading-multiple-images-frame-lag-bug-is-back/155 "2020-11-19T16:24:23Z")
Hey Chris, Loading multiple images: I attempted to run a task involving 3584 image assets (256x256, grayscale PNGs) on the iPadOS version of Mworks. The client seems to hang at around 3100 images loaded. The server do… --- ## [Starting phase](https://mworks.discourse.group/t/starting-phase/156)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 4\ **Last updated:** [November 12, 2020, 2:47pm UTC](https://mworks.discourse.group/t/starting-phase/156 "2020-11-12T14:47:17Z")
Hi Chris, I’ve come upon another experimental problem with the definition of the starting phase being set at the edge rather than the center of the grating. In this condition, a plaid with components moving at 0 and 90 … --- ## [Setup for using MATLAB](https://mworks.discourse.group/t/setup-for-using-matlab/37)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 0\ **Last updated:** [November 9, 2020, 2:58pm UTC](https://mworks.discourse.group/t/setup-for-using-matlab/37 "2020-11-09T14:58:22Z")
In order to use MWClient’s MATLAB interface window, you need to tell MWorks the location of your MATLAB installation. To do this, you must create a symbolic link named MATLAB in the Applications directory that points t… --- ## [Matlab issue](https://mworks.discourse.group/t/matlab-issue/157)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 2\ **Last updated:** [November 9, 2020, 2:48pm UTC](https://mworks.discourse.group/t/matlab-issue/157 "2020-11-09T14:48:48Z")
Hi Chris, We recently had to update a couple of computers to Catalina (Duke sprung a bunch of security requirements on us earlier this week). The computers are both running Mworks 0.9.dev (2019.04.24) and were cloned f… --- ## [Upgrading Blackrock for more analog channels](https://mworks.discourse.group/t/upgrading-blackrock-for-more-analog-channels/158)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 3\ **Last updated:** [November 6, 2020, 5:31pm UTC](https://mworks.discourse.group/t/upgrading-blackrock-for-more-analog-channels/158 "2020-11-06T17:31:35Z")
Hi Chris - Hope you’re well. Just wanted to run something by you quick. I’ve been talking to Blackrock about needing more than 3 analog channels on my recordings system for my optogenetics experiments (2 channels for e… --- ## [Using multiple keyboards](https://mworks.discourse.group/t/using-multiple-keyboards/159)
**Author:** [@cstawarz](https://mworks.discourse.group/u/cstawarz)\ **Replies:** 2\ **Last updated:** [November 5, 2020, 2:38pm UTC](https://mworks.discourse.group/t/using-multiple-keyboards/159 "2020-11-05T14:38:43Z")
Hi Chris, I am trying to set up a multiplayer game where separate keyboards control two avatars on the same screen. When I tried to start the demo you sent initially, I got the ‘multiple matching HID devices’ error p… [Previous page](https://mworks.discourse.group/latest.md?page=8) [Next page](https://mworks.discourse.group/latest.md?page=10)