dpi drone

of the screen * pixel points per column; The resolution of the phone is determined at the factory and cannot be changed. Image resolution: The number of pixels in an image per inch. Image resolution is a unit, called pixels per unit (px/in); Screen Size: Only the physical length of the screen diagonal, immutable, in inches (in); Screen pixel density: (PPI) refers to the number of pixels per inch on the diagonal of the screen; at normal distances, when the PPI is above 300, the human

folder search;If not found, will eventually find in the default drawable folder, if not the default Drawable folder that will be an error. (provided that a picture is made into a number of different resolutions placed in the respective density of the drawable folder)For example, if the current device DPI is 320, the system will first go to drawable-xhdpi directory lookup, if not found, will find xxhdpi→xxxhdpi→hdpi→mdpi→ldpi in turn. For non-existent

libclntsh.so. 12.1 libclntsh.soSetting environment variablesExport ld_library_path=/opt/oracle/instantclient: $LD _library_pathexport oci_lib_dir=/opt/oracle/ Instantclientexport Oci_inc_dir=/opt/oracle/instantclient/sdk/includeIv. Installation of OracleDB testTo install the Oracle library:Install OracleDBOutput:> [email protected] Install/opt/oracletest/node_modules/oracledb> Node-gyp Rebuildmake:entering directory '/opt/oracletest/node_modules/oracledb/build 'CXX (target) RELEASE/OBJ.TARGET/

beautiful, but the speed of the reply a little bit slow.The outer ring is the height of the control, there are several points to note:1. The height must be limited, can not be too high;2. When the drone starts to take off from the ground, to set a fixed large height value, provide a stable pid control, more than a certain height and then change the target height, for example, when the UAV is still measured 20CM, then open the throttle set target heig

$ sharing vulnerability upload Trojan; the second step is to use Metasploit to execute the Trojan. first, the use of ipc$ sharing vulnerability upload TrojanFirst of all, let's introduce the experimental environmentLab Environment:attack aircraft IP address: 10.1.1.2target drone IP address: 10.1.1.110first, let's prepare the tools we need.Tools: Metasploit Remote Control Trojan (remote control Trojan generate everyone to see my relevant i

1. terms and concepts Terms Description Remarks Screen Size) It refers to the actual physical size of the mobile phone, such as the commonly used 2.8 inch, 3.2 inch, 3.5 inch, 3.7 inch Motorola's milestone mobile phone is 3.7 inch Aspect Ratio (width/height ratio) Refers to the actual physical size width/height ratio, divided into long and nolong Milestone is and belongs to long Resolution (resolution) Similar to the definition of computer

Mobile-WebApp development knowledge requiredMobile device users more and more, the daily activation of Android phone has more than 1.3 million units, so we face the mobile Terminal WebApp also began to follow. This paper mainly introduces the relevant knowledge and experience of webapp development and debugging, and gives several optional solutions.First, the basic concept(1) CSS pixels and device pixelsCSS Pixels: The abstract unit used by the browser, used primarily to draw content on a Web pa

This paper mainly introduces the relevant knowledge and experience of webapp development and debugging, and gives several optional solutions.First, the basic concept(1) CSS pixels and device pixelsCSS Pixels: The abstract unit used by the browser, used primarily to draw content on a Web page.Device pixels: Displays the smallest physical unit of the screen, with each DP containing its own color and brightness.The equivalent CSS pixels on the phone screen, which is not fixed, depending on a lot of

reference (refer to Http://www.w3.org/html/ig/zh/wiki/CSS3 media queries): -width viewport widths -height viewport height -device-width Width of the device screen -height of device-height device screen -orientation detection screen in horizontal or vertical screen -aspect-ratio width-to-height ratio based on viewport -Device-aspect-ratio Based on the aspect ratio of the device screen -the number of bits of color, such as whether the min-color:32 match device has 32-bit or more colors -colors in

A project has a slicing layer as the basemap, and a dynamic layer as the topic. Two layers are superimposed. The ratio of the display condition to the slice of the dynamic layer is set accordingly. That is, when the slice layer is displayed below a certain proportion, the topic layer will hide and display some content that can be displayed at this proportion. This function is completely normal when the rest service is accessed through a browser. However, it cannot be correctly displayed on the

at the handouts flying all over the sky, the poor man reached out and grabbed one. He only saw a few google URLs printed on the hard paper that wiped his ass. Poor road is very disdainfully inserted into the bag, it should be a draft paper. Pull out the crumpled handout and click a link. As mentioned above, Android divides the tablet into four grades based on dpi to adapt the app to different tablet resolutions.