scaling

问题 I have a table with columns id,filter1,filter2,time,value which contains millions of records. I want to fetch n equally distributed rows between two timestamps. If the number of records between timestamps is less than n I want to fetch all the records. My current query looks like below, assuming n=200 SELECT s.* FROM ( SELECT t.time, t.value, ROW_NUMBER() OVER(ORDER BY t.time) as rnk, COUNT(*) OVER() as total_cnt FROM table_name t WHERE t.filter1='filter_value' and t.filter2='another_value'

问题 This is a followup to my previous post here I've a 2D geometry created using the following code, ref. (defun graph ( pts sls tls ) ( (lambda ( l ) (foreach x l (text (cdr x) (itoa (car x)) 0.0 1)) (mapcar '(lambda ( a b / p q r ) (setq p (cdr (assoc a l)) q (cdr (assoc b l)) r (angle p q) ) (entmake (list '(0 . "LINE") (cons 10 p) (cons 11 q) '(62 . 8))) (text (mapcar '(lambda ( x y ) (/ (+ x y) 2.0)) p q) (rtos (distance p q) 2) (if (and (< (* pi 0.5) r) (<= r (* pi 1.5))) (+ r pi) r) 2 ) )

问题 I posted a question here asking about what to do about a blurry picture in a java application. What i discovered is that my windows scaling was causing the blurriness. Now i have a greater issue. I want the quality of the image and application to be controlled via the application, without having to change any windows settings if at all possible. Instead of changing the scaling back to 100% there was another windows suggestion from here that said to change the compatibility settings of the

问题 I have a WinForms project which is several years old and has been retro-fitted with async event-handlers: private async void dgvNewOrders_CellClick(object sender, DataGridViewCellEventArgs e) Inside this method is an async call: var projectTemplate = await GetProjectTemplateFile(companyId, sourceLang, targetLang); When the program runs on a normal resolution screen, it runs as expected. However, when run on a high-DPI screen the window's dimensions - as well as those of all child controls -

问题 This question already has answers here : How to repeat elements of an array along two axes? (5 answers) Closed 2 years ago . Note on duplicate message: Similar themes, not exactly a duplicate. Esp. since the loop is still the fastest method. Thanks. Goal: Upscale an array from [small,small] to [big,big] by a factor quickly, don't use an image library. Very simple scaling, one small value will become several big values, after it is normalized for the several big values it becomes. In other

问题 I am using the HTML5 canvas API to draw a tile map for a pixel art game. The rendered tile map is comprised of many smaller images that are cut out of a single source image called a tile sheet. I am using drawImage(src_img, sx, sy, sw, sh, dx, dy, dw, dh) to cut the individual tiles out of the source image and draw them onto the destination canvas. I am using setTransform(sx, 0, 0, sy, tx, ty) to apply scale and translation to the final rendered image. The color "bleeding" issue I need to fix

问题 I want my axis in LineChart to adjust it's maximum and minimum values real-time. Functions like resetAxisMaxValue() and resetAxisMinValue() work well when new data's Y-value is increasing(both positive and negative), however, once the signal gets low again Y-value max and min never drops to the smaller values so it can show all new data on the full canvas of the graph. I wanted to check whether there is method to do so automatically, or whether I should use brute force. Thank you. 回答1: Alex's

问题 I want my axis in LineChart to adjust it's maximum and minimum values real-time. Functions like resetAxisMaxValue() and resetAxisMinValue() work well when new data's Y-value is increasing(both positive and negative), however, once the signal gets low again Y-value max and min never drops to the smaller values so it can show all new data on the full canvas of the graph. I wanted to check whether there is method to do so automatically, or whether I should use brute force. Thank you. 回答1: Alex's

问题 The issue I have a contourf plot I made with a pandas dataframe that plots some 2-dimensional value with time on the x-axis and vertical pressure level on the y-axis. The field, time, and pressure data I'm pulling is all from a netCDF file. I can plot it fine, but I'd like to scale the y-axis to better represent the real atmosphere. (The default scaling is linear, but the pressure levels in the file imply a different king of scaling.) Basically, it should look something like the plot below on

问题 The issue I have a contourf plot I made with a pandas dataframe that plots some 2-dimensional value with time on the x-axis and vertical pressure level on the y-axis. The field, time, and pressure data I'm pulling is all from a netCDF file. I can plot it fine, but I'd like to scale the y-axis to better represent the real atmosphere. (The default scaling is linear, but the pressure levels in the file imply a different king of scaling.) Basically, it should look something like the plot below on