I am trying to define a simple OpenGym observation space with two text string inputs. While I am new to this, I've earlier been able to create an observation space with numerical float variables, using the Box type.
I am having a hard time trying to do the same with text variables. I tried the following and it gives me an error "Values of the dict should be instances of gym.Space" - and I believe this refers to the "str" type I am using. However I am not able to figure out how to do this from the documentation (link).
# Represent an observation. Two text strings
self.observation_space = spaces.Dict({
"text_1": str,
"text_2": str
})
Appreciate any help or direction you can provide. Thank you.
This was solved by using vectorized text features.
Related
In a web application that I am creating tests for, there are 2 sets of strings from which I wish to get a substring (which is unique) to use for identifying that element on the Web Page:
Parent Form:
InputText-eLeType-AQAAAAAAAAAAAAAAAAAAAVWZ-bMs-bms_9999999_3512-bMs-obj-bMsDot-com-bMsDot-bmssolutions-bMsDot-COMPONENT-bMsDot-bms_9999999_109-bMs-textField-bMs-ABNylGGXXu8IPwjI4jMM5y1K
SubForm:
InputText-eLeType-AQAAAAAAAAAAAAAAAAAAAVXJ-bMs-bms_FK_9999999_406_ID-bMs-obj-bMsDot-com-bMsDot-bmssolutions-bMsDot-COMPONENT-bMsDot-bms_9999999_177-bMs-searchLookupField-bMs-ABNylGGXXu8IPwjI4jMM5y1K-bMs-AQAAAAAAAAAAAAAAAAAAAVWZ-bMs-PRIMARY9999999_480-bMs-obj-bMsDot-com-bMsDot-bmssolutions-bMsDot-COMPONENT-bMsDot-bms_9999999_109
I wish to get the substring from both of these using a single function, so that I don't have to create a different functions for each type I encounter:
Substring in the above 2 provided strings is:
ABNylGGXXu8IPwjI4jMM5y1K
This substring can change for each element on the web page, but is unique for each element of the page and so useful to identify.
I cannot use the full string, as it changes for each environment or if I generate a new environment to host the web pages (the complete string depends on the Meta Data).
We tried doing it for the Parent Form, by using the "-" as the delimiter and identifying the last -bMs- and then taking the string, but that does not work for the SubForm.
So, my main question is, is there some RegEx that can be created to extract only that string (composed of alphabets [upper & lower case] and numbers) from the full string? Or some other simpler way to identify that string?
You could try a combination of positive Lookbehind, [A-Z] and [a-z]. Try this code:
(?<=-bMs-)[A-Z]{3}[a-z]\w+
Demo: https://regex101.com/r/YUZiFa/1
It seems to work without even the positive Lookbehind
[A-Z]{3}[a-z]\w+
Demo: https://regex101.com/r/YUZiFa/2
If you're happy to base the selection of the elements on the previous one, then this might work for you:
(?<=searchLookupField-bMs-|textField-bMs-)\w+
Example
And if you wanted to be extra certain, you could append a second lookahead to the end.
(?<=searchLookupField-bMs-|textField-bMs-)\w+(?=-bMs-|$)
Example
If these don't work, or if the whole string varies greatly, then some more examples would help us narrow it down and come up with a great answer!
How can I restrict the input of a TextFieldsuch that it can only contain mathematical expressions?
Accepted inputs would be:
"3+5"
"-5 + 6"
"3/2(6*4)"
"6--5"
"+5-3"
etc..
And rejected inputs would be:
"5+++3"
"6(7)"
"6-6-+-7"
and so on.
Basically; the syntax I want it to be restricted to is the kind of syntax that programming languages normally use for evaluating mathematical expressions, kinda like the syntax input you'd expect from your everyday calculator.
I'm making a program in which I want the user to be able to input numbers and/or calculations into a text box, instead of having to use a calculator to do it and then arduously type out a number with 7 decimal places.
I've done a little look around and I've seen a lot of stuff involving Regex, postfix, BNF, and the like. A lot of it looked very complicated, too complex for my understanding, and none of it had anything to do with AS3.
However, I've had a thought about making this problem a whole lot simpler by just converting the string into a mathematical expression that AS3 can understand, and let Flash handle the errors using try catch, but I don't know how to do that either (Number("3+5")resulted to NaN).
I'm currently restricting text input to just numbers using Event.CHANGE, like this:
function Restrict(event:Event):void
{
if (event.currentTarget.text.indexOf(".") == -1)
{
event.currentTarget.restrict = "0-9.";
}
else
{
event.currentTarget.restrict = "0-9";
}
}
and it's seemed to work well so far.
I intend to implement this new restriction in this manner, but if there is a much more efficient way of restricting text input, please feel free to include it in a response.
Just to reiterate for clarity, I am asking how to implement functionality that will enable someone to input a mathematical expression into a TextField, and the program will register that input as an expression and calculate it.
Thanks for reading.
EDIT: I've done a bit more research and I've stumbled upon a Reverse Polish Notation calculator/parser/utility class/library/thingy that looks very useful. Seems kinda similar to the Executer class that fsbmain mentioned, but it looks a lot simpler to use and easier for me to understand.
However the problem still remains that I'd have to find an efficient way to restrict the syntax of user input to mathematical expressions, but at least now I have at least two ways of converting the string into a number for calculations.
That's quite a tough question actually, even definition for valid mathematical expressions which you mentioned is very complicated itself, i.e. expression 6-6-+-7 is a valid from as3 syntax point of view and gives result 7.
Regarding second part of your question:
converting the string into a mathematical expression that AS3 can understand
That's not possible to do with only native as3 means since eval-like functions are gone since as2 time, but you can try to use some as3-written syntax translator, i.e. Executer from flash-console project:
var exec:Executer = new Executer();
var res:* = exec.exec(this, "6-7");
trace("exec = " + res); //output "-1"
Although it's failed with some complex expressions from your question:
var exec:Executer = new Executer();
var res:* = exec.exec(this, "6-6-+-7");
trace("exec = " + res); //output "- 7"
I have a text field from a SQL Server Source. It is a phone number field that typically has this format:
Home: 555-555-1212
Work: 555-555-1212
Cell: 555-555-1212
Emergency: 555-555-1212
I'm trying to split among fields so that only 555-555-1212 is displayed
I am then taking this field and converting to a string. There are literally break returns (\r\n) between the labels here. The goal here is to have this data split among multiple fields (home,work,cell,emergency,etc.) I was researching how to split text among fields and I made some progress. In the case of home numbers, I used this logic:
SUBSTRING(Phone_converted,FINDSTRING(Phone_converted,"Home:",1) + 5,FINDSTRING(Phone_converted,"\n",1) - FINDSTRING(Phone_converted,"Home:",1) - 5)
This works great as it parses up to the text return and I get 555-555-1212.
Now I experience an issue when searching for a text between break returns. I tried the same logic for Work numbers:
SUBSTRING(Phone_converted,FINDSTRING(Phone_converted,"Work:",1) + 5,FINDSTRING(Phone_converted,"\n",1) - FINDSTRING(Phone_converted,"Work:",1) - 5)
But that won't work and results in writing to my error redirection file. I then tried to insert a break return to find the text at the beginning
SUBSTRING(Phone_converted,FINDSTRING(Phone_converted,"\nWork:",1) + 5,FINDSTRING(Phone_converted,"\n",1) - FINDSTRING(Phone_converted,"\nWork:",1) - 5)
No luck there either. Any ideas on how I can address this. Also, I would appreciate an idea of how I can handle the emergency title at the end. There won't be a break return in that situation, but I still want to parse the text.
I look at your data and I see
Home:|555-555-1212|Work:|555-555-1212|Cell:|555-555-1212|Emergency:|555-555-1212
I'm using the pipe character, |, as a placeholder for where I would segment that string, which is basically wherever you have whitespace (space, tab, newline, etc).
There are two approaches to this. I'll start with the easy one.
Script Component
String.Split is your friend here. Look at what it did with that source data
I added a new Script Component, acting as a Transformation and created 4 output columns, all string of length 12 codepage 1252: Home, Work, Cell, and Emergency. I populate them like so
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
string[] split = Row.PhoneData.Split();
Row.Home = split[1];
Row.Work = split[4];
Row.Cell = split[7];
Row.Emergency = split[10];
}
Derived Column
I'm not going to build out a full blown implementation of this. The above is much to simple but I run into situations where ETL devs say they aren't allowed to use Script tasks/components and that's usually because people reached for them first instead of last.
The approach here is to have lots of Derived Columns Components on your Data Flow. It won't hurt performance and in fact can make it easier. It definitely will make your debugging easier as you'll have lots of it to do.
DER Find Colons
This would add 4 columns into the dataflow - HomeColonPosition, WorkColonPosition etc. You've already started down this path but just build it out into the actual data flow as you'll need to reference these positions and again, it's easier to fix the calculation that populates a column versus a calculation that's wrong and used everywhere. You're likely to find that 4 derived columns are useful here as you'd want to use the previous colon's position as the starting point for the third argument to FINDSTRING
Thus, instead of Work being
FINDSTRING(PhoneData, ":", FINDSTRING(PhoneData, ":" 1) + 1)
it would just be
FINDSTRING(PhoneData, ":", HomeColonPosition + 1)
Just knowing the position of the 4 colons in that string, I can figure out where the phone numbers are (maybe). The position of the colon + 2 (colon and the space) is the starting point and then go out 12 characters.
Where this approach gets ugly, much as it did with the script approach is when that data isn't consistent.
Im trying to figure out how to extract the lat/long of the start/end in a google maps directions link that looks like this:
https://www.google.com/maps/preview#!data=!1m4!1m3!1d189334!2d-96.03687!3d36.1250439!4m21!3m20!1m4!3m2!3d36.0748342!4d-95.8040972!6e2!1m5!1s1331-1399+E+14th+St%2C+Tulsa%2C+OK+74120!2s0x87b6ec9a1679f9e5%3A0x6e70df70feebbb5e!3m2!3d36.1424613!4d-95.9736986!3m8!1m3!1d189334!2d-96.03687!3d36.1250439!3m2!1i1366!2i705!4f13.1&fid=0
Im guessing the "!" is a separator between variables followed by XY where x is a number and y is a lower case letter, but can not quite figure out how to reliably extract the coordinates as the number/order of variables changes as well as their XY prefixes.
ideas?
thanks
Well, this is old, but hey. I've been working on this a bit myself, so here's what I've figured out:
The data is an encoded javascript array, so the trick when trying to generate your own data string is to ensure that your formatting keeps the structure of the array intact. To do this, let's look at what each step represents.
As you're correctly figured out, each exclamation point defines the start of a value definition. The first character, an int value, is an inner count, and (I believe) acts as an identifier, although I'm not 100% certain on this. It seems to be pretty flexible in terms of what you can have here, as long as it's an int. The second character, however, is much more important. It defines the data type of the value. I don't know if I've found all the data types yet, but the ones I have figured out are:
m: matrix
f: float
d: double
i: integer
b: boolean
e: enum (as integer)
s: string
u: unsigned int
x: hexdecimal value?
the remaining characters actually hold the value itself, so a string will just hold the string, a boolean will be '1' or '0', and so on. However, there's an important gotcha: the matrix data type.
The value of the matrix will be an integer. This is the length of the matrix, measured in the number of values. That is, for a matrix !1mx, the next x value definitions will belong to the matrix. This includes nested matrix definitions, so a matrix of form [[1,2]] would look like !1m3!1m2!1i1!2i2 (outer matrix has three children, inner matrix has 2). this also means that, in order to remove a value from the list, you must also check it for matrix ancestors and, if they exist, update their values to reflect the now missing member.
The x data type is another anomaly. I'm going to guess it's hexdecimal encoded for most purposes, but in my particular situation (making a call for attribution info), they appear to also use the x data type to store lat/long information, and this is NOT encoded in hex, but is an unsigned long with the value set as
value = coordinate<0 ? (430+coordinate)*1e7 : coordinate*1e7
An example (pulled directly from google maps) of the x data type being used in this way:
https://www.google.com/maps/vt?pb=!1m8!4m7!2u7!5m2!1x405712614!2x3250870890!6m2!1x485303036!2x3461808386!2m1!1e0!2m20!1e2!2spsm!4m2!1sgid!2sznfCVopRY49wPV6IT72Cvw!4m2!1ssp!2s1!8m11!13m9!2sa!15b1!18m5!2b1!3b0!4b1!5b0!6b0!19b1!19u12!3m1!5e1105!4e5!18m1!1b1
For the context of the question asked, it's important to note that there are no reliable identifiers in the structure. Google reads the values in a specific order, so always keep in mind when building your own encoded data that order matters; you'll need to do some research/testing to determine that order. As for reading, your best hope is to rebuild the matrix structure, then scan it for something that looks like lat/long values (i.e. a matrix containing exactly two children of type double (or x?))
Looks like the developer tools from current browsers (I am using Chrome for that) can give you a lot of info.
Try the following:
Go to Google Maps with Chrome (or adapt the instructions for other browser);
Open Developer Tools (Ctrl + Shift + I);
Go to Network tab. Clear the current displayed values;
Drag the map until some url with encoded data appears;
Click on that url, and then go to the Preview sub-tab;
Try this.
function URLtoLatLng(url) {
this.lat = url.replace(/^.+!3d(.+)!4d.+$/, '$1');
this.lng = url.replace(/^.+!4d(.+)!6e.+$/, '$1');
return this;
}
var url = new URLtoLatLng('https://www.google.com/maps/preview#!data=!1m4!1m3!1d189334!2d-96.03687!3d36.1250439!4m21!3m20!1m4!3m2!3d36.0748342!4d-95.8040972!6e2!1m5!1s1331-1399+E+14th+St%2C+Tulsa%2C+OK+74120!2s0x87b6ec9a1679f9e5%3A0x6e70df70feebbb5e!3m2!3d36.1424613!4d-95.9736986!3m8!1m3!1d189334!2d-96.03687!3d36.1250439!3m2!1i1366!2i705!4f13.1&fid=0');
console.log(url.lat + ' ' + url.lng);
I'm working on a project which accepts input text from the user, processes the input and does various calulations and then outputs text in the same format, but with different figures.
The format of the input text may change over time and since I need to carve out roughly 200 fields from the Input using variable.Slice(?, ?);, maintainance of this project in the future is a huge concern.
The question is, can the .slice(?,?) have variable names in place of the ?, or does it always need to be numbers?
I've searched extensively before resorting to asking here. I dont beleive code is required for this question but if someone needs an example just let me know.
Thanks in advance...
Why didnt you just try it ;)
Yes Ofcourse you can use var's. slice() expects int as parameters. It doesnt matter if that int is hardcoded or a variable!