GUI design – why use discrete rendering for continuous sizes?

Is there a reason to use a discrete plot (like the number of stars) for continuous sizes (like a progress bar)? This assumes that we do not want to display an exact number. (Yes, I understand that values ​​in computers are not "really" continuous, but for the purposes of this question, we'll say they're close enough.)

This question arises from my car and its stress-inducing gas gauge. This is what it looks like when it's full:

Digital Dashboard - full

The gas gauge consists of 6 stacked bars, all of which light up when the gas tank is full. This is what it looks like when it is almost empty:

Digital Dashboard - empty

It's getting worse here. This bottom bar will flash approximately once every second any Time is the meter on a bar. In other words, the last fuel gauge flashes for about 17% of a full tank. Since I drive mostly full to empty, the car seems to tell me that 17% of the time I drive it, has no more gas (and distracts me with a flashing light)

Now some short calculations to show how stressful this is:

The tank size is just over 6 gallons. The fuel efficiency is, however, on average ~ 45mpg (why I like the car). This means that when the tank is full, I have a range of about 270 miles.

The last bar on the gas gauge therefore corresponds to a range of about 75 km. To put this into perspective: With the shuttle service and everything I drive about 32 km per day. This means that I can actually drive for 2 full days while the car screams that it is about to run dry. When I get in my car in the morning and the bar flashes I can play the funny game "Can I actually make it work today?" Play.

Apart from that, it seems to be the obvious solution to have a tighter continuous measurement. Even if there were only 10 measures instead of six, the user can better assess the actual value.

Is there a UX reason, or is it just a bad design?

image – Recommendations for website file sizes for mobile data rates?

Are there any recommended guidelines for how much data a mobile-friendly website should consume while surfing occasionally?

When browsing the desktop, data usage is not as important as long as the load times are good. However, many mobile users may have a fixed data plan and avoid visiting sites that are known to devour their data.

As an example, I design a website to raise awareness of a public interest issue. Although this is mainly for informational purposes, I want to be able to display as many images as possible. The idea is that the user is exposed to a series of new images when browsing occasionally.

Suppose I randomly select a new image each time the user visits a new page. This strategy may be acceptable for desktop users, but I'm worried that the data of mobile users will be devoured and they will avoid the site.

infinite combinatorics – sizes of matches and transversals in hypergraphs

To let $ H = (V, E) $ be a hypergraph. We call $ H $ right if $ E neq emptyset, emptyset notin E $ and for no $ e_1 neq e_2 in E $ we have $ e_1 subseteq e_2 $, ON suitable Is a sentence $ M $ pairwise disjoint edges (members of $ E $), and $ T subseteq V $ should be a transversal if $ T cap e neq emptyset $ for all $ e in E $,

It is easy to see that every transversal has at least the cardinality of a matching.

In the face of infinite cardinals $ alpha < beta $ Is there a correct hypergraph? $ H = (V, E) $ with the following properties?

  1. There is a match of size $ alpha $and no match has a cardinality greater than $ alpha $, and
  2. $ beta $ is the minimum size of a transversal of $ H $,

Unity – How to optimally mix textures of different sizes?

I'm trying to create a 2D lighting map.

For each light source I have a color (,) with a size less than the entire map and a center coordinate. There can be many sources of light and they can overlap (two or more, so I can not just summarize it).

I need to mix all bright colors for each map pixel, not override.

Is there a better approach than going through each light for each map pixel, getting colors, and mixing them?

Features – Why does not my code work in WordPress when I add different image sizes?

// Theme Setup

Function custom_theme_setup () {

// Navigation menus
register_nav_menus (array (array)
& # 39; primary & # 39; => __ (& # 39; primary menu & # 39;),
& # 39; footer & # 39; => __ (& # 39; Footer Menu & # 39;),

// Add support for featured images
add_theme_support (& # 39; post-thumbnails & # 39;);
add_image_size (? small-thumbnail ?, 180, 120, true);
add_image_size (& # 39; banner-image & # 39 ;, 920, 210, true);

add_action (& # 39; after_setup_theme & # 39 ;, & # 39; custom_theme_setup & # 39;);

E-commerce – image for real object sizes, whether possible?

I work in a skincare company and recently discussed whether our ecommerce images should represent the actual dimension of containers or a scale of containers (200 ml, 100 ml, 50 ml).

So basically the same frame of 500px * 500px would display different proportions depending on the article.

Assuming that this could be possible for certain products on some screens, I found this extremely complicated, unworkable, and difficult to maintain, even from the perspective of the software.

I have not found any relevant resource on this topic that I'm hesitant to deal with. By some proven methods, I always see full dimensions and finally explainable measurements, as is the case with Amazon for books.

Enter image description here

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mac os x – Appropriate (large) standard font sizes

For smaller sizes, the default settings become strangely specific. Why 14, but not 15 or 16 or vice versa? This becomes an actual problem if the application does not allow the selection of a custom integer size, even with cheats. The text tool becomes fundamentally flawed and broken.

I do not think you should primarily use such sparse selective defaults. It feels like a bad design. This leads to a distortion of the popularity of font sizes, thereby reducing diversity. For smaller point sizes, in particular less than or equal to 21, odd point sizes are a different world than even point sizes. Each size counts: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.

Enter image description here

Then add sizes randomly. Use odd sizes if you like, even sizes if you want, etc.

A scale could look like this:
8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 36, 40, 48, 56, 60, 64, 68, 72, 76, 80, 88, 96, 128, 192, 256, 512, 1024, 4096, 16384, 65536, 16777216, 4294967296

Or so:

8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31, 33, 35, 38, 41, 44, 48, 52, 57, 63, 69, 76, 84, 93, 104, 117, 132, 149, 169, 192, 219, 251, 289, 334, 387, 450, 525, 615, 724, 855, 1014, 1208, 1444, 1733, 2089, 2528, 3071, 3746, 4588, 5642, 6966, 8636, 10750, 13435, 16859, 21242, 26872, 34133, 43532, 55744, 71672, 92525, 119930, 156083, 203959, 267603, 352533, 466303, 619294, 825822, 1105697, 1486436, 2006396, 2719239, 3700314, 5055803, 6935888, 9553762, 13213175, 18348491, 25583145, 35815244, 50343372, 7105265935915244 887793816, 1294285791, 1894561295, 2784502083, 4109101254

It is completely up to you which numbers you choose. As long as it is possible to select any integer size.

Design – Why Odd Font Sizes on Just Rounding?

This is based more on a very psychological perspective (more precisely on number psychology) than on drafts, programming or other things.

Even numbers have the peace of mind that I'm not doing anything unpleasant or inappropriate, and have been used over time as standard font sizes for various devices and platforms (even MS Word has its predefined fonts in even numbers).

In a sense, odd numbers have this eye-catching and "chaotic" feel, and if you design and your typeface is odd, many designers would round up to the nearest even number.

You can read more about the differences here from the research of a UX designer.