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Showing content with the highest reputation on 02/28/2023 in all areas
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How to overcome this error? By doing what the error messages says.1 point
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What is it they say about the last 10% of a project is 90% of the work? I stand by my original statement "What a crappy, poorly thought-out protocol" So. Like I said earlier, 1/2 the state is in the client and 1/2 in the server. I'll add now "they have to agree". So what if they don't agree? Well, here we go. Client and server maintain a list of packets (Packet Identifier). Ok. Can do that. OK. But what if I don't get the PUBREC? I can send a duplicate right? Sweet Oh wait. Ok So we save them up for connect only. Job done, right? Ummm. So we can only send duplicates at connect (and only if it's a persistent session) and there can only be so many unacknowledged ACK's otherwise we get spanked. So what happens if the unacknowledged packets reaches the limit? Really? Go silent or hope for the best depending on the whim of the developer? Hmmm. So what does this look like in the real world. EMQX: 2 hours before getting Receive Maximum exceeded. Hive: 20 minutes before getting Receive Maximum exceeded. Mosquitto: 1 hour before getting Receive Maximum exceeded. That's no good. Lets send duplicates if we have some acks and are getting near the limit (that's what we should be doing IMHO) EMQX: 40 minutes before getting getting disconnected (Packet Identifier in use). Can't blame them. Crappy protocol. Hive: 24 hrs and still going but getting duplicates in the subscriber (that's not right for QOS 2 but could live with it.) Mosquitto: 24 hrs. and still going. No problems. We have a winner! This is a doozy too: Fix the state (normally that would be with duplicates), restart (without persistent session-poor subscribers ) or blame someone else. Am I missing something?1 point
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Hi everyone, I was forced to insert google (or equivalent) maps in a project and, for some time, I used Mohammad Garousi version (that I found the most complete version freely available on the web). It uses the GMap.NET dlls. After some time I noticed a recurring random issue at dll level, after which a red cross appears in the .net container without any chance to correct or avoid the error. After some time I decided to create a new map container that might solve the issue. I decided to use a picture instead of the .net container. I was able to add new functions too, like creating a route, customize its behavior (such as changing the route color to spectrum), or add another image moving with map position or zoom change and so over. The result is attached below. This is a full-working example that can be studied or modified at will, but still a demo and not a library or final release. User can move map dragging it inside the picture, can zoom with the slider and so on. Coordinates and cursor positions are updated live any time the cursor is in the picture area. You can draw a route enabling the draw button. Remember to set it off when drawing is over. You can add a third party image (the default one is a drone image) in the picture 0,0 position. You can easily customize the default position acting on the block diagram code. Any time you set the image button to on, the image will be placed to the 0,0 position, recalculating its latitude-longitude coordinates. You can dynamically change map representation, route color or zoom. I hope this example can be useful for those who need a more stable GIS representation. If any issues are discovered, please contact me. Bye Flavio LabGIS.rar1 point
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Version 0.24.0
8,904 downloads
lava_lib_LabVIEW_API_scripting_tools v0.22.1.21 by University of Leeds Author: Gavin Burnell Copyright: Copyright © 2007-2010, University of Leeds License: BSD Compatible LabVIEW Versions: >= 8.6. Compatible OS Versions: ALL. Description: This is a LabVIEW 8.6.1 Library of VIs to help with scripting. The public VIs include routines to get hold of the block diagram references, control terminal references, get the connector pane reference and select the connector pane pattern and wire controls up to it. There are a number of routines to help wire the block diagram up, including creating a selection of the primitives (I got bored of coding them all up !). I've stuck in some routines that work with tags - hidden away is the capability to tag LabVIEW vi-server objects with arbitary data. One possibility is to use this to identify bits of the block diagram of a vi for moving and rewiring via scripting. The scripting Tools includes a separate XNode support library that provides routines to help scripting and terminal adaptation in XNodes. There are some routines to help with undo transactions new to this release. This Package Conflicts with these other packages: LAVAG_scripting_tools >= 0.0 Scripting Tools >= 0.01 point -
Version 1.4.1
17,397 downloads
UI Tools v1.4.0 Copyright © 2009-2016, François Normandin All rights reserved. Author:François Normandin Contact Info: Contact via PM on www.lavag.org LabVIEW Versions: Created and tested with LabVIEW 2012 Dependencies: OpenG Application Control Library >= 4.1.0.7 OpenG Array Library >= 4.1.1.14 OpenG File Library >= 4.0.1.22 OpenG LabVIEW Data Library >= 4.2.0.21 OpenG String Library >= 4.1.0.12 LAVA Palette >= 1.0.0.1 Description: This package contains tools for designing user interfaces. A first palette helps create special effects using transparency of front panel. Using them allows to quickly create fade-ins or outs using linear or exponential variation of the intensity. A second palette contains VIs to calculate the position of GObjects for many purposes like alignment, snap, mouse follow, etc. A third palette contains VIs to create dialog boxes based on class instances. "Simple Error Dialog" and "Simple Selection List" are featured with or without backrground blackening effect. A fourth palette includes some VIs to move objects programmatically on the front panel, using a basic deceleration algorithm to provide an impression of a smooth movement. The packaged VIs are all namespaced using a suffix “__lava_lib_ui_tools” which should not conflict with any of your own code. Includes: Front Panel Transparency (Fade In & Fade Out) Utilities (Alignment, Snap) Dialog (OOP based, extensible) Engine (Beta) for object movement Instructions: This package is distributed on the LabVIEW Tools Network (version 1.3) and updates are on LAVA (1.4). It can be installed directly in the addon folder of any LabVIEW version from 2012 to now. The addon installs automatically under the LAVA palette of the addon submenu. License: Distributed under the BSD license. Support: If you have any problems with this code or want to suggest features, please go to www.lavag.org and navigate to the discussion page.0 points