pgr | easy way to execute queries | Runtime Evironment library
kandi X-RAY | pgr Summary
kandi X-RAY | pgr Summary
This module aims to provide a structured and easy way to execute queries against a Postgres DB. It's a good fit if you want more support than using the pg module by itself but don't want to use an ORM. Its main features include a tagged template string based query helper and a small wrapper around pg's actual query methods.
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QUESTION
I'm drawing circle diagram using my own inbuilt libraries.
I'm able to draw circles using table data (x1,y1 & r) ,sharing code
I'm using datachange signal with table, whenever enter any table item data then its creating no. of graph with circles. Is there other signal I can use or what change can make in code ? I want single graph with no. of circles(based on no. of entries in table).
Also when circles are drawn lines coming like we draw without removing our pen to draw another circle how to overcome this ?
CHPlotGraph2D - this class to create graph
CHPlotCurveData- this Class hold the data points for the curves
CHPlotCurve-Class to draw the data as a line curve
CHPlotCurveData* curvedata1 = new CHPlotCurveData();
QAbstractItemModel* table1 = ui.tableView->model();
for (int irows = 0, maxI = table1->rowCount(); irows < maxI; ++irows)
{
double x1 = table1->data(table1->index(irows, 1)).toDouble();
double y1 = table1->data(table1->index(irows, 2)).toDouble();
double r = table1->data(table1->index(irows, 6)).toDouble();
for (double angle = 0; angle <= 360; angle++)
{
double theta = (angle * 180) / 3.14;
double zx = x1 + r * cos(theta);
double zy = y1 + r * sin(theta);
QPointF pt(zx, zy);
curvedata1->append((pt));
}
}
CHPlotCurve* curve1 = (CHPlotCurve*)pGr->insertCurve("circle",
CHPlotGraph2D::Line, false );
curve1->setSamples(curvedata1);
connect(ui.tableView->model(), &QAbstractItemModel::dataChanged,
this, &tablemodel::drawCircle);
ANSWER
Answered 2021-Jun-10 at 13:23Thank you ..I have solved the problem .When anything changes in the table, I need to remove the existing curve containing all the circles and build/add a new one, or replace the data
QUESTION
I am currently attempting to run a for loop on about 500 stock tickers and attempting to create a chart for all of them. I have succeeded in doing this but my for loop breaks on this error Error in runSum(x, n) : n = 20 is outside valid range: [1, 5]
I got the stock tickers from BatchGetSymbols library.
Here is my script at the bottom is my for loop:
...ANSWER
Answered 2020-Apr-05 at 00:49After downloading the data, I get the following warning message:
QUESTION
I am new to webscrypt I just build a webscrypt but i have an issue with the part I want to get!
When I run my script it give me Voir l’information détaillée de Queco Electric Ltd
but I only want to get Queco Electric Ltd
See code bellow to understand! Thanks you for the help guys!
webscript.py
...ANSWER
Answered 2020-Feb-27 at 19:53Try This code
QUESTION
File upload does not have files on update panel when outside Update panel on full postback this code will work.
...ANSWER
Answered 2020-Jan-09 at 06:43After a bit of research I found the solution, add another update panel to that particular item Template with both the parent and child updatemode as conditional
QUESTION
I have the following XML structure
...ANSWER
Answered 2019-Dec-09 at 12:47One thing you can do is to add a check for having a direct PRODUCT
child:
QUESTION
I am trying to generate a tool tip text using SQL. The text generated is passed as Title Attribute in HTML. There needs to be some newline characters generated in the tool tip.
I have used the following -
CHAR(13)
; CHAR(10)
;
; \n
.
However in all cases, I see the character itself in HTML and not a new line.
Any idea how to achieve this?
the SQL is something like this
...ANSWER
Answered 2019-Nov-29 at 16:06The CHAR(10) did the trick.
QUESTION
I tried to send data from one activity to another. The problem is I am not receiving all the datas. Just 3 instead of 6.PS: I am new to android development
sending data from this
...ANSWER
Answered 2019-Nov-27 at 16:18Use getIntent() instant of intent for getting the intent value ` first Activity
QUESTION
I am currently working on a program that scrapes Yahoo Finance Earnings Calendar Page and stores the data in a file. I am able to scrape the data but I am confused as to why it only scrapes the first 2 and last 2 columns. I also tried to do the same with a table on Wikipedia for List of S&P 500 Companies and am running into the same problem. Any help is appreciated.
Yahoo Finance Code
...ANSWER
Answered 2019-Nov-17 at 07:23As far as I can tell this nothing to do with the data and everything to do with the representation. Only the first and last columns are printed so as to keep the output from being massive and difficult to read. You can even see at the end of your output that your DataFrame has 9 columns.
Take a look here if you want to print the entire thing. You could also use .info
to get some general information on your columns.
QUESTION
I have a large dataframe ordered by date with several colums like sensor, farm, paddock, index, etc.I looking for an efficient way to get monthly means by date and a specific paddock. Currently, I've filtered column by column and after get a monthly mean saving the result in a dataframe for in the end merge every dataframe from a column in to one.
...ANSWER
Answered 2019-Oct-08 at 04:52Probably you are looking for
QUESTION
I am trying to set up a new web page in ASP.net. I am using a gridview with paging however the CSS class I am trying to use isn't getting applied. The CSS on the rest of the page is working, it is just in relation to this one gridview. I have not been able to find the answer through google. Please help, any assisstance is appreciated!
I have tried changing CSS class to class, I have tried changing the CSS Class, I have tried removing the CSS link from the Site Master, I have tried removing the DIV container from around the Gridview, but none of this made a difference.
Gridview:
...ANSWER
Answered 2019-Sep-28 at 12:58For posterity's sake so the question can have an answer, I'll write out the solution here.
Use the keyboard shortcut Ctrl
+ Shift
+ R
in order to clear your browser's cache. Modern browsers cache resources like javascript and css files so that the next time you visit, they load even faster. If you make a change to your CSS and they aren't appearing, odds are good your browser is still using the cached version.
If you are concerned about your users seeing cached resources instead of the updated ones, check out these cache busting techniques to help prevent these issues.
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