I have a Excel file I have recently completed. It contains 7 empty TextBoxes, 3 CommandButtons (2 will go away once I sign off this document) and 37 OptionButtons. Everything is working great. The macro code isn't too large (195 kb) but it takes about 15 seconds to load.
Is there a way to make it load faster?
Seems the same file opens almost immediately on a different PC elsewhere on the network even with double the OptionButtons. I think the switch that sections off to my area is going bad or just my port. Might be something else too. Either way it works ok on other PCs so I am calling it good. Need to test out the switch and ports now. Fun fun.
Related
I have 2 applescripts (saved as apps) that make webhook calls in a loop to control the volume of my stereo. Each script displays a dialog that asks for a number of ticks to tick the volume up or down, and it loops to make the webhook call each time.
Background: I wrote a program called pi_bose that runs on my raspberry pi to send commands to my Bose Series 12 stereo. It sends codes on the 28Mhz band using a wire as an antenna plugged into one of the GPIO ports. Node red receives the webhook calls and runs that script. But there are various things that can make it fail. The antenna can be loose because the pi has been bumped. Node red isn't running. The program has a small memory leak that causes a problem after having been used for about 6 months. And sometimes there's background interference that makes not every transmission work (I could probably use a longer antenna to address that I guess). But sometimes, whatever is playing on the stereo is just so soft that it's hard to detect the subtle change to the volume. And sometimes, it seems that either the webhook call happens slowly and the volume is changing - it just happens over the course of 20-30 seconds. So...
I know I could do the loop on the pi itself instead of repeating the webhook call, but I would like to see progress on the mac itself.
I'd like some sort of cue that gives me some feedback to let me know each time the webhook call happens. Like, a red dot on the AppleScript app icon or something in the corner of the screen that appears for a fraction of a second each time the webhook call is made.
Alternatively, I could make the script make some sort of sound, but I would rather not disrupt audibly whatever is playing at the time.
Does anyone know how to do that? Is it even possible to display an icon without a dialog window in applescript?
I am trying to build an Android app that interfaces with the ESP32 using BLE. I am using the RxBluetoothKotlin library from Vincent Masselis for the Android side. For the ESP32 side, I am using the default Kolban libraries that are included in the Arduino IDE. My phone is a OnePlus 5T and my ESP32 is a MH ET Live ESP32DevKIT. My Android app can be found here, and my ESP32 program here.
The whole system works pretty much perfectly for me in terms of pure functionality. That is to say, every button does what it's supposed to do, and I get the exact behaviour I had expected to get. However, the communication itself is very slow. Around 200 bytes/second. My test button in the Android app requests a bunch of text data from the ESP32, and displays this in a dialog. It also lists a number which represents the time between request and reception in milliseconds. Using this, I get around 2 seconds for 440 bytes of data. When I send less data, the time decreases approximately linearly with data size. 40 bytes of data will take around 200ms, and 20 bytes or under typically takes less than 100ms.
This seems rather slow to me. From what I understand, I should be able to at least get a few kilobytes per second. I have tried to check the speed using nRF Connect, but I get the same 2 seconds timespan for my data transfer. This suggests that the problem is not in my app, since I also have it with a completely different app. I also put the code in my main loop inside of callbacks instead (which I probably should have done in the first place), but this didn't change things at all. I have tried taking the microcontroller and my phone to a few different locations, hoping to eliminate interference. I have tried to mess with BLEDevice::setPower and BLEDevice::setMTU, as well as setting RxBluetoothGatt.requestMtu(500) on the Android side. Everything so far seems to have had little to no effect. The only thing that did anything, was adding the line "pServer->updatePeerMTU(0,500);" in my loop during the connection phase. This caused the first 23 bytes of data to be repeated whenever I pressed the test button in my app, and made the data transfer take about 3 seconds. If I'm lucky, I can get maybe a bit under 1.8 seconds for 440 bytes, but this is a very small change when I'm expecting an order of magnitude of difference, and might even be down to pure chance rather than anything I did.
Does anyone have an idea of how to increase my transfer speed?
The data transmission speed is mainly influenced by the Bluetooth LE connection interval (between 7.5 ms and 4 seconds) and is negotiated between the master (central unit) and the peripheral device. The master establishes a connection with a parameter set and the peripheral can propose to change this parameter set. In the end, however, the central unit decides which parameter set is to be used.
But the Bluetooth connection interval cannot be changed by an Android applications directly, which normally act as the central role. Instead it can request a connection priority which is known to have an influence on the connection interval.
I'm trying to set up my LabView VI + my USB 6001 I/O box to be able to read multiple independent voltages at once, while also outputting a single constant voltage.
I've successfully gotten my USB box to output the voltage I want while reading back a single voltage, but so far I've been unable to read back more than one voltage (and if I do, the two voltages seem to be co-dependent on one another in some way).
Here's a screenshot of my VI:
Everything to the right of the screenshot window should be unimportant to the question.
If anyone is curious, this is to drive multiple LVDT's and read back their respective voltages.
Thank you all for your help!
Look at your DAQ's manual, especially the pages I noted below.
http://www.ni.com/pdf/manuals/374259a.pdf
Page 11
All the AI channels get multiplexed, and the low-side reference can be switched (RSE vs. differential). So the two channels you're sampling require both of those to switch. It might be a settling issue where the ADC is taking a sample before the input value is stable.
To verify this, try using using the same low side (differential or RSE) on both channels. Also try slowing down your sample rate (but your 1 kHz should already be slow enough...).
Page 14
Check this to make sure you have everything connected and grounded correctly.
Page 18
Check this for more details about switching between 2 sources quickly.
Perhaps you could try it using the Daqmx express VIs:
http://www.ni.com/tutorial/2744/en/
I have (at the time) five coloumns in Excel which I need to read and store into Matlab variables. I currently use the following code:
TE=xlsread('../input/input.xlsx','A:A');
AF=xlsread('../input/input.xlsx','B:B');
TAHE=xlsread('../input/input.xlsx','C:C');
HD=xlsread('../input/input.xlsx','D:D');
TCW=xlsread('../input/input.xlsx','E:E');
This takes 11 seconds, when the input.xlsx contains 14 rows. When using 8760 rows (which will be the number of rows in my final inputxlsx), the consumed time is about the same.
The bottleneck seems to be opening the Excel file. Am I right? How can I minimize the time consumption?
To me, it seems like Matlab opens the Excel file five times, when only one seems necessary. How can I improve my code?
EDIT:
By using the following code, the time consumption was reduced by about 2 seconds (still rather slow):
temp=xlsread('../input/input.xlsx','A:E');
TE=temp(:,1);
AF=temp(:,2);
TAHE=temp(:,3);
HD=temp(:,4);
TCW=temp(:,5);
From the xlsread documentation:
num = xlsread(filename,sheet,xlRange,'basic') reads data from the
spreadsheet in basic mode, the default on systems without Excel for
Windows. If you do not specify all the arguments, use empty strings as
placeholders, for example, num = xlsread(filename,'','','basic').
My understanding of this is that on Windows machines with Excel installed, MATLAB actually calls Excel and lets it read the data and pass them to MATLAB, whereas otherwise (without Excel, without Windows or with explicit 'basic' mode) the file is read by a native MATLAB implementation, which may be faster because the Excel startup alone may take some time.
You shouldn't split up the xlsread calls. Try reading all your data at once, for example, into a cell array and split it into variables once it's loaded.
EDIT: I just saw your edit. I guess it won't get any faster...
I'm developing an app (XNA Game) for the XBOX, which is a pretty simple app. The startpage contains tiles with moving gif images. Those gif images are actually all png images, which gets loaded once by every tile, and put in an array. Then, using a defined delay, these images are played (using a counter which increases every time a delay passes).
This all works well, however, I noticed some small lag every x seconds in the movement of the GIF images. I then started to add some benchmarking stuff:
http://gyazo.com/f5fe0da3ff81bd45c0c52d963feb91d8
As you can see, the FPS is pretty low for such a simple program (This is in debug, when running the app from the Xbox itself, I get an avg of 62fps).
2 important settings:
Graphics.SynchronizeWithVerticalRetrace = false;
IsFixedTimeStep = false;
Changing isFixedTimeStep to true increases the lag. The settings tile has wheels which rotate, and you can see the wheels go back a little every x seconds. The same counts for SynchronizeWVR, also increases lag.
I noticed a connection between the lag and the moment the garbage collector kicks in, every time it kicks in, there is a lag...
Don't mind the MAX HMU(Heap memory usage), as this is takes the amount of the start, the avg is more realistic.
Here is another screen from the performance monitor, however I don't understand much from this tool, first time I'm using it... Hope it helps:
http://gyazo.com/f70a3d400657ac61e6e9f2caaaf17587
After a little research I found the culprit.
I have custom components that all derive from GameComponent, and who get added to the Component list of the main Game class.
This was one (of a total of 2) major problem, causing to update everything that wasn't needing an update. (The draw method was the only one who kept the page state in mind, and only drew if needed).
I fixed this by using different "screens" (or pages as I called them), wich are the only components who derive from GameComponent.
Then I only update the page wich is active, and the custom components on that page also get updated. Problem fixed.
The second big problem, is the following;
I made a class which helps me on positioning stuff on the screen, relative that is, with percentages and stuff like that. Parent containers, aligns & v-aligns etc etc.
That class had properties, for size & vectors, but instead of saving the calculated value in a backing field, I recalculated them everytime I accessed a property. But calculating complex stuff like that uses references (to parent & child containers for example) wich made it very hard for the CLR, because it had alot of work to do.
I now rebuilt the whole positioning class to a fully functional optimized class, with different flags for recalculating when necessairy, and instead of drops of 20fps, I now get an average of 170+fps!