## magento2 – Apply filters or mass actions on grids with fake collection (or wirhout ui components)

I a admin grid with a change on _prepareCollection() function to get the collection from a response of api call, its working fine. But I do not have the filters or mass functions, how can I do that without ui components?

I have this change on my grid file:

/**
* Collection
*
*/
protected function _prepareCollection()
{
$filter = ( 'query' => 'cat yellow', 'page' => 1, 'region' => '', 'year' => '', );$collection = $this->_api->searchCat($filter);

$this->setCollection($collection);
return parent::_prepareCollection();
}


If I could simulate a collection, maybe I could use ui components, but I’m lost, how can I resolve my problem?

The idea is use the filter to search cats with cat api, and the mass action is to import those registers into a products.

## calculus – Finding the center of mass when mass is equal to 0

I need to designate the center of mass of a curve:

$$K = {(x,y,z) in mathbb{R}^{3}: x(t) = 2cos(t), y(t) = 2sin(t), z(t) = t, t in (-2pi, 2pi)}.$$

The density of $$K$$ is $$rho(x,y,z) = x + y + z$$.

The problem is that the mass of $$K$$ is equal to $$intlimits_{-2pi}^{2pi} rho(x(t),y(t),z(t)) sqrt{(dot{x(t)})^{2} + (dot{y(t)})^{2} + (dot{z(t)})^{2}} dt = 0$$. How to compute center of mass then?

## label removed – How do I calculate the final temperature of aluminum in water with the mass and temperature of both substances?

Thanks for contributing a response to MathOverflow!

But avoid

• Make statements based on opinion; back them up with references or personal experience.

Use MathJax to format equations. MathJax reference.

## When PCs are involved in mass combat, how would war work?

I want my PCs to be part of a battle and I also want the rest of the battle to continue around you. Would my PC have to fight an endless line of NPCs until the battle is over and one side has won?

## permalinks: How to edit mass image url in featured image and product description?

I've tried a few plugins (free) but none update the URL on the featured product image and product descriptions.

How can I upgrade in bulk instead of one by one? If there is any plugin (preferably free) that can edit the image URL, please let me know.

Thank you

## email – Mass Mail Server Hostname

I am using a VPS that will send emails to thousands of (legitimate) email contacts.

I have everything ready, so the mail passes several checks for SPF and DKIM.

One thing left is the hostname of the server, this is set by my hosting company and it is using one of its TLDs. I can change the hostname, but it seems quite complicated and I am wondering if there is any need.

Will keeping your hostname adversely affect email, i.e. go spam or get blocked? I have checked the TLD and it is not blacklisted so it is not a concern. Is there anything else I should consider?

## Azure Portal: how to delete mass deletion images?

In Azure Portal, I am in Start – Images and I marked several images with a checkbox, but there is no action & # 39; Delete & # 39; that allows me to delete multiple images at once. Is there any other way than to delete one at a time?

## r – variable 1 appears to be constant within LAD groups with the MASS library

I am new to boy and I tried to follow different tutorials and it worked well. I even tried the same code on the iris data and it worked. But for this data file I have a problem, I spent hours trying to solve it, but I couldn't find a way to do it.

I appreciate if you can help me
thanks

This is the structure of my data frame

'data.frame':   189 obs. of  2 variables:
$Sex: Factor w/ 2 levels "Men","Women": 1 1 1 1 1 1 1 1 1 1 ...$ SBP: num  127 127 127 127 127 ...



and this is a sample of my data


Men 126.8497
Men 126.8961
Men 126.9387
Men 126.9781
Women 123.9307
Women 123.8818
Women 123.8313
Women 123.7789
Women 123.7253



This is my code

library (MASS)

dataFile <- dataFile(,c(2:3))

test <- sample(189, size = as.integer(189*0.2), replace = FALSE)  #189 is the number of data (observation)

train <- -test

fit <- lda(SBP ~., data= dataFile, subset = train)


## Is it possible to commit mass murder without weapons?

William Unek killed a total of 57 people in two separate massacres; His main weapon was an ax.

If you are extremely physically fit, extremely fast and combat trained, it might be possible to kill large numbers of people with your own hands.

Still, there are better things to think about.

## list – History of mass restore versions to specific versions

Can someone help me with the best way to restore a specific version for all listed items?

So using this above method I can retrieve all version history for list items using http stream connector to SharePoint parse but then I am stuck with subtracting 10x version tags or sample item for example I'm using should go from Version ID 28160 (version 55.0 label) back to 23040 (version 45.0 label).

Obviously I intend to use the same API call as POST with / restoreVersion attached for update.

I have tried using logic to select and subtract to no avail and I would REALLY appreciate some guidance.