Why the scientific notation? 3.436e3 $/BTC now
3.436k is a much simpler way to remove the zeros, and actually includes one less character.
Show HN: Coinmarketcap replacement with free JSON API
31–40 of 90 posts
Re: Show HN: Coinmarketcap replacement with free JSON API
#32Re: Show HN: Coinmarketcap replacement with free JSON API
#33Good work!
I see 96 coins. Could you add more? Doesn't need to have everything, but at least the couple of hundred popular ones.
How long do you plan to keep it online ?
Can you add market_cap to this list?
percent changes?
Edit: I am using this in https://coinzaa.com/ now , thank you
Re: Show HN: Coinmarketcap replacement with free JSON API
#34Earlier quoted context omitted.
Looks like SSL is supported, they just don't auto upgrade requests.
During tests, we found it was better to let people chose. You can use whatever method you feel more comfortable with. Sometime usability and security go in different way. We could do HSTS but if you took time to type http:// maybe you really want http not https
Why is it better to let people choose? That implies there is a downside to https:// or a reason some people prefer http:// -- can you elaborate?
If you type just the domain name you get http:// by default, which, in my experience, is how most people type in site URLs.
Re: Show HN: Coinmarketcap replacement with free JSON API
#35Why the scientific notation? 3.436e3 $/BTC now
From http://cryptomarketplot.com/cmp-faq.html : What exactly does 1.23e-4 means? Why do you use the computer form of scientific notation? We use scientific notation to remove the leadings zeroes. What is simpler to read quickly, 0.000123 or 1.23e-4? If you trade crypto, you usually already know by heart how many zeroes are in front, and what is the approximate price range - you only care about the changes of the non…
i disagree, the standard notation with 8 decimals is easier to process instantly. Or at least show everything with as E-8 so that eyeballing is easy
Re: Show HN: Coinmarketcap replacement with free JSON API
#36Good work! I see 96 coins. Could you add more? Doesn't need to have everything, but at least the couple of hundred popular ones. How long do you plan to keep it online ? Can you add market_cap to this list? percent changes? Edit: I am using this in https://coinzaa.com/ now , thank you
Percent change, you mean you want the equivalent from the original CMC JSON:
"percent_change_1h": "XXX",
"percent_change_24h": "XX",
"percent_change_7d": "XX",
Here is an example for the change in 1h: it is 10:45 AM, so do the average for 10AM, do the average for 9AM, see the percentage change.
A bad method is to average from 10:45AM to 9:45AM, average from 9:45AM to 8:45AM then report the percentage change, because if there was a big change at 9:30, and just one, then the coin is stable, it will have decaying effect on the percentage change. You will see it moving, while the coin has stabilized! To me, that's wrong.
Coinmarketcap was doing the latter. We can support that, but you should consider switching.
Re: Show HN: Coinmarketcap replacement with free JSON API
#37Good work! I see 96 coins. Could you add more? Doesn't need to have everything, but at least the couple of hundred popular ones. How long do you plan to keep it online ? Can you add market_cap to this list? percent changes? Edit: I am using this in https://coinzaa.com/ now , thank you
Percent change, you mean you want the equivalent from the original CMC JSON: "percent_change_1h": "XXX", "percent_change_24h": "XX", "percent_change_7d": "XX", We can add that, but we want to use fixed points in times, to avoid floating periods comparison. Here is an example for the change in 1h: it is 10:45 AM, so do the average for 10AM, do the average for 9AM, see the percentage change. A bad method is to average…
what CMC does is what everyone does, i think it's the standard method. From your frontpage it seems u already have those values somewhere
Re: Show HN: Coinmarketcap replacement with free JSON API
#38Work in progress! The linked graph are in PDF, and should update every hour soon. The website is made to be fast to read, and give essential information. It should load very fast. No ads. No metrics. No bullshit. The JSON API is similar to the deprecated CMC API. But no need of API key and you get not just the last price, but bid and ask. Feedback is much appreciated!
Co author here - I make the API and the backend. The numbers come from a large sample of exchanges, with several million new datapoint added every day to cover every crypto we find important. It is more of a hobby for me, but I hope you like it!
The real work is to spot the anomalies, so your averages don't deviate from real values and I think that's what makes Coinmarketcap reliable.
If you say you made it for hobby, how are you trying to replace Coinmarketcap?
Re: Show HN: Coinmarketcap replacement with free JSON API
#39Why the scientific notation? 3.436e3 $/BTC now
From http://cryptomarketplot.com/cmp-faq.html : What exactly does 1.23e-4 means? Why do you use the computer form of scientific notation? We use scientific notation to remove the leadings zeroes. What is simpler to read quickly, 0.000123 or 1.23e-4? If you trade crypto, you usually already know by heart how many zeroes are in front, and what is the approximate price range - you only care about the changes of the non…
Yeah it’s not. My first thought was that you had messed up large integers with javascript. I’m probably not the only one who thought that.
Re: Show HN: Coinmarketcap replacement with free JSON API
#40Why the scientific notation? 3.436e3 $/BTC now
3.436k is a much simpler way to remove the zeros, and actually includes one less character.
Yes for BTC, then for something 10x that 34.36 start looking not as good.
We could make an option for people who prefer regular numbers. I will add that to the feature requests.