transformation

问题 This question already has answers here : How to aggregate values into collection after groupBy? (3 answers) Closed 8 months ago . I have a dataset like below; with values of col1 repeating multiple times and unique values of col2. This original dataset can almost a billion rows, so I do not want to use collect or collect_list as it will not scale-out for my use case. Original Dataset: +---------------------| | col1 | col2 | +---------------------| | AA| 11 | | BB| 21 | | AA| 12 | | AA| 13 | |

问题 suppose I have the following model : sig counter{ value: Int, } { value > 0 value < 3 } pred show{} run show for exactly 1 counter I would like to generate the als files corresponding to the two instances of this model : open counter one sig counter_1 extends counter{}{ value=1 } fact { counter = {counter_1}} and, open counter one sig counter_2 extends counter{}{ value=2 } fact { counter = {counter_2}} I have used the Alloy API to generate the instances but I cant find the method to export

问题 I need help in math in general for euler angles and specifically in ARKit. I looked at many references for calculation of euler angles but I wondered why apple in its tutorial calculated yaw from atan2(r11, r12) as follow: let yaw = atan2f(camera.transform.columns.0.x, camera.transform.columns.1.x) If I need to calculate pitch or roll, for example how? I need to understand yaw and why they not always depends on yaw = camera.eularAngle.y Please check this code and questions in comments, I'm

问题 I have the following xml file. I need to be able to generate a csv file based on below. However the catch is if its the same effective moment and there are multiple sequence attributes it should generate just one line of output, however if the effective moment (just date part) is different then it should generate a line each based on the effective moment. I have trying to play with xslt but have been struggling so far. Any help provided will be appreciated. XML file <?xml version="1.0"

问题 I have the following xml file. I need to be able to generate a csv file based on below. However the catch is if its the same effective moment and there are multiple sequence attributes it should generate just one line of output, however if the effective moment (just date part) is different then it should generate a line each based on the effective moment. I have trying to play with xslt but have been struggling so far. Any help provided will be appreciated. XML file <?xml version="1.0"

问题 I have this radial gradient expressed in objectBoundingBox coordinates. <svg width="300" height="300"> <defs> <radialGradient id="MyGradient" gradientUnits="objectBoundingBox" cx="0.3" cy="0.4" r="0.3" fx="0.1" fy="0.2"> <stop offset="0%" stop-color="red" /> <stop offset="50%" stop-color="blue" /> <stop offset="100%" stop-color="black" /> </radialGradient> </defs> <rect fill="url(#MyGradient)" stroke="black" stroke-width="5" x="50" y="100" width="200" height="100"/> </svg> Is it possible to

问题 I am a little bit confused about the data augmentation performed in PyTorch. Because we are dealing with segmentation tasks, we need data and mask for the same data augmentation, but some of them are random, such as random rotation. Keras provides a random seed guarantee that data and mask do the same operation, as shown in the following code: data_gen_args = dict(featurewise_center=True, featurewise_std_normalization=True, rotation_range=25, horizontal_flip=True, vertical_flip=True) image

问题 My problem is as follows: I have the picture of a half cylinder taken from a horizontal perspective and it has square grid lines on it, so I was wondering how can I implement in MATLAB to unwrap this half cylinder so all my grid cells become the same size? I know I will loose lots of resolution in the edge cells and a simple linear interpolation should do the trick, but I do not know how to tell MATLAB to do this. Also I know the geometrical properties of the cylinder, radius and height. Any

问题 My problem is as follows: I have the picture of a half cylinder taken from a horizontal perspective and it has square grid lines on it, so I was wondering how can I implement in MATLAB to unwrap this half cylinder so all my grid cells become the same size? I know I will loose lots of resolution in the edge cells and a simple linear interpolation should do the trick, but I do not know how to tell MATLAB to do this. Also I know the geometrical properties of the cylinder, radius and height. Any

问题 My problem is as follows: I have the picture of a half cylinder taken from a horizontal perspective and it has square grid lines on it, so I was wondering how can I implement in MATLAB to unwrap this half cylinder so all my grid cells become the same size? I know I will loose lots of resolution in the edge cells and a simple linear interpolation should do the trick, but I do not know how to tell MATLAB to do this. Also I know the geometrical properties of the cylinder, radius and height. Any