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问题 I have a PNG image file.I want to convert it to GeoTiff. I installed QGIS software but i can not use it and i dont know how to Georeference the image. Please help me. is there any online software ? 回答1: This is a pretty good tutorial with step by step instructions on how to georeference an image in the GUI. http://www.qgistutorials.com/en/docs/georeferencing_basics.html 回答2: If you wish to do it instantly, the quickest option will be via the link below: https://mygeodata.cloud/converter/png

问题 I have a code uses Cairo and Pango to create an image : #include<stdio.h> #include<cairo.h> #include<pango/pangocairo.h> #define IMAGE_WIDTH 650 #define IMAGE_HEIGHT 150 #define TEXT "HELLO WORLD" #define FONT "MizuFontAlphabet Normal 40" /* * $ gcc $(pkg-config pangocairo cairo --cflags --libs) file.c */ int main(int argc , char** argv) { cairo_surface_t *surface; cairo_t *cr; PangoLayout *layout; PangoFontDescription *desc; PangoRectangle extents; surface = cairo_image_surface_create(CAIRO

问题 I have a code uses Cairo and Pango to create an image : #include<stdio.h> #include<cairo.h> #include<pango/pangocairo.h> #define IMAGE_WIDTH 650 #define IMAGE_HEIGHT 150 #define TEXT "HELLO WORLD" #define FONT "MizuFontAlphabet Normal 40" /* * $ gcc $(pkg-config pangocairo cairo --cflags --libs) file.c */ int main(int argc , char** argv) { cairo_surface_t *surface; cairo_t *cr; PangoLayout *layout; PangoFontDescription *desc; PangoRectangle extents; surface = cairo_image_surface_create(CAIRO

问题 I have a PNG image file.I want to convert it to GeoTiff. I installed QGIS software but i can not use it and i dont know how to Georeference the image. Please help me. is there any online software ? 回答1: This is a pretty good tutorial with step by step instructions on how to georeference an image in the GUI. http://www.qgistutorials.com/en/docs/georeferencing_basics.html 回答2: If you wish to do it instantly, the quickest option will be via the link below: https://mygeodata.cloud/converter/png

问题 I have apache setup to proxy requests to backend app servers. There are several backend servers and there is a big rewrite_rules file which is processed for each request to properly proxy all the requests to app servers. One particular app server sometimes takes a long time to respond back, causing the proxy server to become slow if a lot of requests are being proxied to that particular server, as the requests are waiting to get the response back and eventually timeout after the timeout

问题 How do I check the version of tomcat 7 that is installed on RHEL? I looked in the bin directory and cannot find version.sh. 回答1: You can publish a jsp with the following scriptlet: <%= application.getServerInfo() %> Or grep catalina.out for a line like: INFO: Starting Servlet Engine: Apache Tomcat/7.0.37 Or take a look at the file org/apache/catalina/util/ServerInfo.properties inside lib/catalina.jar . Just to give you 3 options ;). 回答2: Try this to see the names and versions of any Tomcat

问题 There is EXT , KHR or AMD or NV extensions. Maybe there are some others. I know that NV means Nvidia and that it nv extensions are unlikely supported by AMD. But what about khr ones or ext ones? Are they mandatory supported by everyone? 回答1: There's a website devoted to tracking this information. Maybe there are some others There are lots But what about khr ones or ext ones? Are they mandatory supported by everyone? KHR extensions are typically things that will be folded into the

问题 There is EXT , KHR or AMD or NV extensions. Maybe there are some others. I know that NV means Nvidia and that it nv extensions are unlikely supported by AMD. But what about khr ones or ext ones? Are they mandatory supported by everyone? 回答1: There's a website devoted to tracking this information. Maybe there are some others There are lots But what about khr ones or ext ones? Are they mandatory supported by everyone? KHR extensions are typically things that will be folded into the

问题 There is EXT , KHR or AMD or NV extensions. Maybe there are some others. I know that NV means Nvidia and that it nv extensions are unlikely supported by AMD. But what about khr ones or ext ones? Are they mandatory supported by everyone? 回答1: There's a website devoted to tracking this information. Maybe there are some others There are lots But what about khr ones or ext ones? Are they mandatory supported by everyone? KHR extensions are typically things that will be folded into the

问题 I am trying to use flex on a project and I am trying to use CMake to link flex with my project. I found a FindFLEX.cmake online which I am using for this. You can find it here. This was supposed to be in CMake by default, but I dont think it was. My directory structure is as follows root ---src ---CMakeLists.txt ---cmake ---Modules ---FindFLEX.cmake ---build ---external ---flex - Where flex is installed ---bin ---flex.exe ---lib ---libfl.a My src/CMakeLists.txt is as follows cmake_minimum